Everything a Sec 2 family needs for 2027: the MOE Sec 2 Science and Maths topics at G1, G2 and G3, how WAs and the end-of-year exam work, how schools allocate Sec 3 subject combinations, Pure or Combined Science, A-Math, the 2027 term dates and a timeline to the SEC in 2029.
Sec 2 is the year that decides what your child studies in Sec 3 and 4. The content steps up in both Science and Maths, and the end-of-year exam in October feeds straight into the school's subject combination exercise.
This guide puts the MOE Sec 2 topic lists for Science and Maths on one page, explains how assessment works, walks through how schools allocate Pure Science, Combined Science and Additional Maths under Full Subject-Based Banding (Full SBB), and maps the road from Sec 2 in 2027 to the SEC in 2029. If you want the Sec 1 view of the same decision, our Sec 1 subject combinations guide is the place to start.
Who is in Sec 2 in 2027?
Year
Level
What happens
2025
Primary 6
PSLE
2026
Sec 1
First year of secondary school, with each subject at G1, G2 or G3. Full SBB has applied to every Sec 1 cohort since 2024
2027
Sec 2
Lower secondary ends. Subject combination for Sec 3 chosen in Term 4
2028
Sec 3
Upper secondary subjects begin, including Pure or Combined Science and A-Math
2029
Sec 4
SEC exam, English and Mother Tongue papers in September, the rest in October to November (expected)
2030
After Sec 4
SEC results in January, then the Post-Secondary Admissions Exercise (expected)
Students take each subject at G1, G2 or G3, so one child can take Maths at G3 and English at G2. The SEC certificate lists every subject with its level. Our Full SBB explainer covers how levels are set, and the SEC 2027 guide covers the exam itself.
Sec 2 Science syllabus: the topics
MOE's Lower Secondary Science syllabus for G2 and G3 is one two-year course with five themes and 16 topics. MOE does not split the topics by year. Schools decide the order, and the usual pattern is topics 1 to 8 in Sec 1 and topics 9 to 16 in Sec 2. One school's published 2026 plan, for example, teaches chapters 9 to 16 in Sec 2 and revises Sec 1 chapters 3, 4, 5 and 8 for the end-of-year exam. Check your school's scheme of work for its own order.
topics in the two-year G2/G3 course
16
topics usually taught in Sec 2 (topics 9 to 16)
8
themes, from the Scientific Endeavour to Systems
5
Sec 1 cohort that first used this syllabus, revised in 2024
2021
Which syllabus applies in 2027
Sec 2 students in 2027 follow MOE's Lower Secondary Science syllabus for the G2 and G3 courses, first used with the 2021 Sec 1 cohort. The current PDF is the 2024 revision, which uses the Full SBB names G2 and G3 in place of Normal (Academic) and Express. MOE's syllabus page lists it as the "2023 G2/G3 Lower Secondary Science Syllabuses", and showed no newer version when we checked on 7 November 2026. G1 classes follow a separate G1 syllabus.
Lower Secondary Science is not an SEC subject. It is assessed only by the school. MOE says it provides "the foundational concepts that students need for the disciplinary sciences (biology, chemistry and physics) at upper secondary", which is where SEC science starts.
For reference, the Sec 1 topics are the Scientific Endeavour, physical properties of matter, chemical composition (elements, compounds and mixtures), separation techniques, the ray model of light, cells, the particulate nature of matter, and atoms and molecules.
G1 Science: Sec 2 topics
The G1 syllabus has 12 simpler topics with more hands-on activities. In one school's 2026 plan, Sec 2 G1 classes study the six topics below, and revise Cells and Getting Energy and Nutrients from Food from Sec 1 for the end-of-year exam.
G1 topic
What students learn
Force
Pushes and pulls, friction and gravity, effects of forces, stopping distance, simple machines (lever, inclined plane, pulley)
Energy
Forms of energy, energy conversion in machines, renewable sources, reducing energy wastage
Electricity
Measuring current and voltage, how resistors, cells and lamps in series or parallel change the current, hazards such as damaged insulation, damp conditions and overloaded circuits
Heat
Temperature as degree of hotness, heat flowing from hot to cold, expansion and contraction of solids, liquids and gases, the bimetallic strip
Human reproduction
Puberty, reproductive organs, birth control, sexually transmitted infections and why antibiotics cure only bacterial ones
Taking good care of my body
The nervous system, and the effects of drugs, alcohol and smoking
These are the key ideas MOE's learning outcomes ask for in each G2/G3 Sec 2 topic, with the limits the syllabus sets. Items marked (G3) are optional for G2.
Topic
Key ideas to know
Not required, or common traps
9. Forces and energy
A force is a push or pull, contact (friction) or non-contact (magnetic, gravitational). Forces change motion, shape, turning and pressure. Force is measured in newtons (N). Mass is the amount of matter in kg and stays the same everywhere. Weight is the pull of gravity, in N. Energy is converted, never created or destroyed. (G3) Pressure = force ÷ area, in N/m² or Pa. (G3) Work is done when an object moves in the direction of a force, in joules
Writing "energy is used up". Mixing up mass and weight. Forgetting to convert cm² to m²
10. Heat
Temperature in kelvin (K). Conduction through solids, convection in liquids and gases, radiation needs no medium. Dull black surfaces emit and absorb radiation faster than shiny white ones. Most substances expand when heated, so their density falls
Saying "cold flows in". Calling air a conductor when it is an insulator
11. Chemical changes
A chemical change forms a new substance. Atoms are rearranged, not created or destroyed, so mass is conserved. Word equations. Acids turn blue litmus red, alkalis turn red litmus blue, Universal Indicator shows pH. Neutralisation, thermal decomposition, photosynthesis, rusting and respiration. (G3) Acid and metal give a salt and hydrogen, acid and carbonate give a salt, water and carbon dioxide
Chemical equations with symbols are not required. Melting and dissolving are physical changes
12. Ecosystems
An ecosystem is a community plus its physical environment. Food chains and webs, predator and prey, mutualism, parasitism. Energy flows from the Sun through producers to consumers. Physical factors such as light, water and pH affect survival. (G3) Decomposers recycle nutrients
Arrows in a food chain point to the eater, showing the direction energy flows
13. Electrical systems
Current (ampere, A), potential difference (volt, V), resistance (ohm). Circuit symbols and diagrams, with ammeters in series and voltmeters in parallel. Power in watts (W). Safety: fuses, earthing, no overloading. (G3) Series and parallel resistors, cost of electricity in kWh
The formula V = IR is not required. Ammeters always go in series
14. Digestive system
Mouth, gullet, stomach, small intestine, large intestine, rectum, anus and what each does. Digestion breaks large molecules into small soluble ones. (G3) Enzyme classes: carbohydrases, proteases, lipases
Names of individual enzymes are not required
15. Transport systems
Arteries carry blood away from the heart, veins carry it back, capillaries are where substances are exchanged. Diffusion moves digested food and oxygen into cells. (G3) Xylem carries water and minerals up, phloem carries food. (G3) Osmosis takes water into roots
The structure of the heart and of blood vessels is not required
16. Reproduction
Puberty changes, male and female organs and fertilisation, the menstrual cycle, temporary and permanent birth control, STIs. Antibiotics cure bacterial STIs, not viral ones
Sec 2 Science papers mix short calculations with "explain why" questions. These are our own examples at the standard of the syllabus.
Calculations
1Pressure (G3)A box weighs 600 N. It rests on a face of area 0.5 m². Pressure = force ÷ area = 600 ÷ 0.5 = 1200 Pa. Turned onto a face of 0.2 m², the pressure is 600 ÷ 0.2 = 3000 Pa. Same force, smaller area, greater pressure.
2Pressure with a unit change (G3)A girl weighing 450 N stands on one heel of area 3 cm². First convert: 3 cm² = 0.0003 m². Pressure = 450 ÷ 0.0003 = 1 500 000 Pa. This is why stiletto heels dent soft floors.
3Cost of electricity (G3)A 2000 W heater runs 3 hours a day for 30 days. Energy = 2 kW × 90 h = 180 kWh. At an example rate of 30 cents per kWh, the cost is 180 × $0.30 = $54.
4Mass and weightAn astronaut has a mass of 60 kg on Earth. On the Moon the mass is still 60 kg, because the amount of matter does not change. The weight is smaller, because the Moon's gravitational pull is weaker.
Explain-why questions
A full-mark answer usually has three parts: the science idea, how it applies here, and the link back to the question.
Question
Model answer
Where marks are lost
Why does a metal spoon left in hot soup feel hotter than a plastic one?
Metal is a good conductor of heat. Heat is transferred quickly by conduction from the soup along the spoon to the hand. Plastic is a poor conductor, so less heat reaches the hand
"Metal is hot" earns nothing. Name conduction
Why are gaps left between sections of a concrete road or railway track?
When the sections are heated by the Sun they expand. The gaps give them room to expand, so they do not push against each other and crack or buckle
Forgetting to say what would happen without the gaps
Why does painting an iron gate stop it rusting?
Rusting is a chemical reaction in which iron reacts with oxygen and water. The paint forms a barrier that keeps oxygen and water away from the iron
Naming only water or only oxygen
A dull black kettle and a shiny silver kettle hold the same hot water. Which cools faster, and why?
The dull black kettle. Dull black surfaces emit heat by radiation faster than shiny surfaces, so it loses heat more quickly
Saying black "absorbs cold"
How does digested food reach the body's cells?
Digested food is at a higher concentration in the small intestine than in the blood, so it diffuses into the capillaries. The blood carries it to the cells, where it diffuses out
Leaving out "higher to lower concentration"
Snakes are removed from a field. Predict what happens to the frogs they ate, and explain.
The frog population rises at first because fewer frogs are eaten. Later it may fall, because more frogs compete for the same insects
Giving only the first effect
Word equations are written in words, with an arrow between the reactants and the products. For example, magnesium plus hydrochloric acid produces magnesium chloride plus hydrogen. Chemical symbols are not needed at this level.
Science process skills and the MOE framework
MOE's science curriculum framework sits behind every topic. It has three domains, and school assessments test all three, not only facts.
Domain
What it means
What a Sec 2 student should show
Core Ideas
The big ideas that link biology, chemistry and physics
Using one idea, such as energy or particles, to explain several topics
Practices of Science
Ways of thinking and doing in science, the nature of scientific knowledge, and how science, technology, society and the environment relate
Planning and carrying out an investigation, judging evidence, discussing the effects of a technology
Values, Ethics and Attitudes
Curiosity, creativity, integrity, objectivity, open-mindedness, resilience, responsibility and healthy scepticism
Recording data honestly, weighing both sides of an issue such as energy sources or heart transplants
The inquiry skills come from the syllabus's Scientific Endeavour topic and are used in every Sec 2 topic:
Posing questions and forming a hypothesis to test.
Planning and carrying out investigations, changing one variable and keeping the others the same.
Measuring with the right instrument and SI unit. Accuracy is how close a reading is to the true value. Precision is how close repeated readings are to each other.
Spotting errors. A zero error is a reading when there should be none. A parallax error comes from reading a scale at an angle. (G3) Errors can be random, such as human error, or consistent, such as a zero error.
Evaluating results and communicating findings in tables, graphs and writing.
Working safely in the laboratory.
Practical work in Sec 2 Science
MOE's syllabus lists practical work, projects, model-making, posters and presentations as forms of performance-based assessment alongside written papers. Each school decides how much practical work counts and how it is marked, usually through lab worksheets, practical tasks or projects inside the WAs.
The investigations named in the Sec 2 learning outcomes are the ones most likely to appear:
Topic
Investigation in the syllabus
9. Forces and energy
Measuring force in newtons. (G3) Investigating pressure with pressure = force ÷ area
10. Heat
Inferring from experiments that different materials transfer heat at different rates
11. Chemical changes
Testing acidic, alkaline and neutral solutions with litmus, Universal Indicator and plant indicators. Reacting acids with alkalis. (G3) Acids with metals and carbonates
12. Ecosystems
(G3) Measuring pH, temperature and light intensity with a data logger and probes
13. Electrical systems
Setting up circuits with switches, lamps, resistors, ammeters and voltmeters. (G3) Series and parallel resistors, varying resistance
14. Digestive system
(G3) The effect of enzymes on digestion
15. Transport systems
(G3) Inferring that xylem carries water and mineral salts
A practical answer earns marks for a clear method, a fair test, a results table with units, and a conclusion that refers to the data.
Practice papers and self-test questions
Our test papers library does not have Lower Secondary Science papers yet (checked 7 November 2026). It has Primary Science papers, and Sec 3 and Sec 4 science papers such as Combined Science prelim papers, which become useful once your child starts Sec 3. For Sec 2, the best practice material is your school's own past WAs and end-of-year papers, the activity book that goes with the textbook, and the questions below.
1Q1. A force of 50 N acts on an area of 0.25 m². What is the pressure? (G3)50 ÷ 0.25 = 200 Pa.
2Q2. Name the method of heat transfer that can happen in a vacuum.Radiation.
3Q3. Iron and sulfur are heated and form iron sulfide. Is this a physical or a chemical change? Give a reason.Chemical, because a new substance is formed.
4Q4. Where should an ammeter be placed to measure the current through a lamp?In series with the lamp.
5Q5. Which blood vessels carry blood away from the heart?Arteries.
6Q6. Universal Indicator turns purple in a solution. What does this tell you?The solution is strongly alkaline.
7Q7. In the food chain grass, grasshopper, frog, which organism is the producer?Grass, because it makes its own food by photosynthesis.
8Q8. Can antibiotics cure all sexually transmitted infections?No. They cure infections caused by bacteria, not those caused by viruses.
Sec 2 Maths syllabus at G3, G2 and G1
All three Maths syllabuses list content by year, so these are MOE's own Sec 2 topics.
Strand
G3 Mathematics, Sec 2
G2 Mathematics, Sec 2
G1 Mathematics, Sec 2
Ratio and proportion
Map scales, direct and inverse proportion
Map scales, direct and inverse proportion
Direct and inverse proportion, rates, average speed, unit conversion
Algebra
Expanding products, the three special identities, factorising quadratics, changing the subject of a formula, adding and subtracting algebraic fractions
Expanding two brackets, the three identities, factorising quadratics, multiplying and dividing simple algebraic fractions
Adding, subtracting and simplifying linear expressions
Graphs
Quadratic graphs, maximum and minimum points, symmetry
Coordinates, linear graphs, gradient
Coordinates, linear graphs, gradient
Equations
Inequalities, simultaneous equations (substitution, elimination, graphs), quadratic equations by factorisation
Linear and simple fractional equations, inequalities, simultaneous equations
Solving and forming linear equations
Geometry
Congruence and similarity, enlargement, Pythagoras' theorem, trigonometry (sine, cosine, tangent)
Polygons and angle sums, constructions, congruence and similarity, Pythagoras' theorem
Triangles and quadrilaterals, bisectors, constructions, similarity, Pythagoras' theorem
Mensuration
Pyramid, cone and sphere
Pyramid, cone and sphere
Prism and cylinder, cm² to m² and cm³ to m³
Statistics and probability
Dot diagrams, histograms, stem-and-leaf, mean of grouped data, probability of single events
Same as G3
Dot diagrams, histograms, mean, mode and median, probability of single events
The biggest jump is at G3. Linear graphs are a Sec 1 topic at G3, so Sec 2 moves on to quadratics and trigonometry, which are the foundations of Additional Maths. The lower secondary Maths subject page has the Sec 1 content as well.
Three worked examples at G3
1Factorise x² − 5x − 14Find two numbers that multiply to −14 and add to −5. They are −7 and 2, so x² − 5x − 14 = (x − 7)(x + 2). Check by expanding.
2Make t the subject of v = u + atSubtract u from both sides to get v − u = at, then divide by a. So t = (v − u) ÷ a.
3Find the height of a ladder on a wallA 5 m ladder stands 1.4 m from the wall. By Pythagoras' theorem, height² = 5² − 1.4² = 25 − 1.96 = 23.04, so the height is 4.8 m.
Humanities and English in brief
Geography (G2 and G3). MOE frames the two-year course around sustainable resource use, with one thematic question for each year: managing natural resources (water, tropical rainforests and mangroves) and building cities sustainably (housing and transport). Each topic includes a fieldwork-style Geographical Investigation. Source: MOE lower secondary Geography syllabus (PDF).
History (G2 and G3). Four units over two years trace Singapore from Temasek in 1299 to the late 1970s, with one Historical Investigation a year. MOE says Sec 2 students move from describing factors to describing and explaining them, which prepares them for upper secondary History. Source: MOE lower secondary History syllabus (PDF).
Literature in English continues in Sec 2. From Sec 2, MOE lets students take Geography, History or Literature at a more demanding level if they showed aptitude and interest in Sec 1.
English continues the G2 and G3 syllabus: reading, writing, oral and listening. In Sec 2, practise longer written responses and spoken answers, because the 2027 SEC English oral is taken on a computer with a video prompt. Our Sec 2 English tuition page sets out the skills that matter most this year.
How Sec 2 is assessed
Assessment
When
What it covers
Weighted assessments (WA1, WA2, often WA3)
Spread across Terms 1 to 3
Two or three recent topics each, as quizzes, tests, practicals or projects
End-of-year exam (EOY)
Usually October, in Term 4
Most of the Sec 2 syllabus, and in many schools some Sec 1 topics too
Practical and project work
Through the year
Lab investigations in Science (see the practical work section), investigations in Geography and History
MOE removed mid-year exams for all secondary levels by 2023, so feedback comes from WAs and classwork instead (MOE, 2022). The weight of each WA and the EOY is set by each school and shared in its assessment plan, usually early in Term 1. Our WA1, WA2 and SA2 guide explains how they add up.
MOE's science syllabus asks end-of-year papers to sample the whole two-year course so students connect what they learned. In practice, a Sec 2 science EOY can include density, separation techniques or atoms from Sec 1, so do not let Sec 1 notes gather dust.
Choosing upper secondary subjects at the end of Sec 2
This is the decision most parents search for. Here is how it works under Full SBB, and how it differs from our Sec 1 guide, which is about preparing early and why A-Math and Pure Science matter for JC. This section is about the exercise itself.
What every Sec 3 student takes
MOE sets the compulsory upper secondary subjects: English, Mother Tongue, Mathematics, Science and Humanities. At G2 and G3, Humanities means Social Studies plus one elective (Geography, History or Literature in English), and a student can take a second humanities subject in full. Students taking mostly G1 subjects take G1 Humanities, which is not examined, and must take Science and/or Computing. Electives such as Additional Maths, Art, Design and Technology, Principles of Accounts and Computing can be taken at the level that suits the student. Source: MOE, secondary school experience.
How schools allocate combinations
MOE leaves allocation to each school, which must also work within its teachers and timetable. The 2026 briefings we read for students entering Sec 3 in 2027 follow the same pattern:
1BriefingAround August, the school explains the combinations it will offer next year and the criteria for each.
2End-of-year resultsReleased around mid-October. These are the main evidence for eligibility.
3ChoicesStudents rank their preferred combinations on a form or portal, usually in late October.
4AllocationThe school places students by merit (results against the criteria), choice, and the number of places. An elective may run only if enough students pick it. One school needs at least 10.
5Outcome and appealResults come out in early to mid-November, with a short appeal window. Final classes are set by late November.
There is no national pass mark for Pure Science or A-Math. These are real 2026 criteria from two schools, to show the range:
Subject choice
School A (2026)
School B (2026)
Two Pure Sciences (Physics and Chemistry)
Science 70% and Maths 65%
Science 65% and Maths 65%, taken with A-Math
G3 Additional Maths
Maths 65%
Maths 65% with Pure Sciences, or 60% with Combined Science
G2 Additional Maths
Not listed
G2 Maths 70%, or at least 50% in G3 Maths
Number of subjects (mostly G3)
6 or 7
7 with Pure Sciences, 6 with Combined Science
School B reviewed its old 70% bar against its 2022 to 2025 results and set 65% for 2027, which shows that criteria do change. Always read your own school's numbers.
Triple, Pure or Combined Science
Option
SEC subjects (2027 codes)
Best for
Trade-off
Triple Science
Physics K323, Chemistry K324, Biology K325
Strong all-round science students aiming at JC sciences, medicine-related or life science paths
Heaviest load. Not every school offers it
Two Pure Sciences
Usually Physics and Chemistry, or Chemistry and Biology
JC science or engineering routes. The most common "Pure Science" option
More content and practical work than Combined Science
Students who want time for humanities or arts, or who find science demanding
Two halves of two sciences, one grade
G2 Science
Science K223, K224 or K225
Students taking mostly G2 subjects
No Pure Science papers at G2
Codes are from SEAB's G3 and G2 lists for the 2027 SEC. They may be updated by 2029.
Combined Science does not close the JC science route. One junior college, for example, accepts O-Level Science (Chemistry) for H2 Chemistry and Science (Physics) for H2 Physics, but needs Additional Maths for H2 Maths (Nanyang JC admissions). Our Combined Science guide explains the paper format.
Additional Maths
MOE describes A-Math as an upper secondary elective for students with an interest in maths that "prepares them better for courses of study that require mathematics". G3 A-Math covers algebra, trigonometry and calculus, and builds directly on Sec 2 quadratics and trigonometry (MOE A-Math syllabuses, PDF). G2 A-Math also exists, so a student in G2 Maths with strong results can still take it at some schools. Our E-Math vs A-Math guide compares the two in detail.
Moving levels up or down
MOE allows students to take a subject at a more demanding level "based on their performance in secondary school", and students who drop a level can move back up as they gain confidence. Schools have the final say (MOE parliamentary reply, 5 August 2026). The end of Sec 2 is a natural point to ask about moving Maths or Science from G2 to G3, because Sec 3 starts new upper secondary syllabuses. Our guide to choosing G1, G2 and G3 levels covers the trade-offs.
Decision table
If your child...
Consider
Why
Is aiming for JC and enjoys science and maths
Two Pure Sciences with A-Math at G3
Keeps every H2 science and H2 Maths open
Is aiming for JC but prefers humanities, languages or business
Combined Science, A-Math if Maths is strong, two humanities
JC needs a G3 humanities and a G3 maths or science in L1R4, not Pure Science
Is aiming for polytechnic engineering or applied science
Pure or Combined Science, with A-Math if Maths is strong
Engineering and science diplomas generally look at Maths and a science subject
Scores well in Maths but finds Science hard
Combined Science with A-Math
A strong A-Math grade can count in the aggregate
Is below 50% in Maths or Science at G3
Stay with the core subjects, or the G2 level for that subject
A good G2 grade is worth more than a failing G3 grade, and moving up later is possible
Loves art, design or food science
Art, D&T or Nutrition and Food Science as the elective
Electives can be taken at the level that suits the student
Worked example: same marks, two schools
Wei Jie ends Sec 2 with 68% in G3 Science and 66% in G3 Maths.
At School A, Pure Physics and Chemistry need 70% in Science, so he misses by 2 marks. He qualifies for A-Math (65% in Maths) and takes Combined Science with A-Math.
At School B, Pure Sciences with A-Math need 65% in both, so he qualifies for the 7-subject combination.
Two percentage points in the overall Science score made the difference at School A. That is why the Sec 2 EOY matters more than any Sec 1 test.
What if the outcome is not what you hoped?
Use the appeal window. School B, for example, runs an appeal period straight after results. Appeal with a clear reason, such as a strong WA record or a medical certificate for an exam day.
Combined Science is not a dead end. The JC science subjects remain open with the matching Combined Science component, as shown above.
Missed A-Math? Ask whether G2 A-Math is offered, and whether the school ever reviews placements later.
Placed in G2 for a subject? MOE allows a move up later based on performance, so keep results strong in Sec 3.
Too heavy after a term? Talk to the form teacher early. Any change of combination is the school's decision, and it is easier to discuss before results slide.
The 2027 school calendar
Period
2027 dates
Term 1
Mon 4 Jan to Fri 12 Mar
March holidays
Sat 13 Mar to Sun 21 Mar
Term 2
Mon 22 Mar to Fri 28 May
June holidays
Sat 29 May to Sun 27 Jun
Term 3
Mon 28 Jun to Fri 3 Sep
September holidays
Sat 4 Sep to Sun 12 Sep
Term 4
Mon 13 Sep to Fri 19 Nov
Year-end holidays
Sat 20 Nov to Fri 31 Dec
Schools used as SEC written exam venues end their final term earlier, on Friday 29 October 2027, so Sec 2 students in those schools finish then. School holidays in term include Tuesday 9 February, Monday 3 May, Monday 5 July, Tuesday 10 August and Teachers' Day on Friday 3 September. Source: MOE, school terms and holidays for 2027. See our 2027 school holidays guide for public holidays.
The Sec 2 year, term by term
Mon 4 Jan 2027Term 1 startsAsk for the assessment plan and note WA dates
Term 1WA1Usually covers the first two or three Sec 2 topics in each subject
From May 2027Applied Learning Modules openMOE lets Sec 2 students join polytechnic and ITE modules from May
Term 2WA2The next block of topics. Check which Sec 1 topics come back
June holidaysCatch upFix the weakest topic before Term 3
Aug 2027 (expected)Subject combination briefingIn 2026, one school briefed on 17 August
Term 3WA3The last WA before the end-of-year exam
Mid-Oct 2027 (expected)End-of-year resultsIn 2026, released around mid-October
Late Oct 2027 (expected)Submit subject choicesIn 2026, forms closed in late October
Mid to late Nov 2027 (expected)Sec 3 combination confirmedIn 2026, results in mid-November, final classes in late November
Fri 19 Nov 2027Last day of school yearEarlier (29 Oct) at SEC venue schools
Under the rules MOE has set for 2028, JC applicants need an L1R4 gross score of 16 or better, all at G3, including one humanities subject and one maths or science subject (MOE, JC and MI). Polytechnic applicants need an ELR2B2 net score of 22 or better, with one subject allowed at G2 (MOE, polytechnic courses). Check for any change before 2030. Our L1R4 guide and PSE 2028 guide explain both aggregates.
Common struggles in Sec 2
Algebraic manipulation. Expanding, factorising and changing the subject all appear at once in G3. Sign errors with negative numbers cause most lost marks. Daily short practice beats a weekly long session.
Graphs. Reading gradient, plotting quadratic curves and solving simultaneous equations by graph need neat axes and correct scales. Many students lose marks by joining points with straight lines instead of a smooth curve.
Trigonometry. Choosing between sine, cosine and tangent trips up students who have not labelled the opposite, adjacent and hypotenuse sides first.
Chemistry basics. Telling a chemical change from a physical one, writing word equations, and knowing what acids do to metals and carbonates. Students who mix up elements, compounds and mixtures from Sec 1 struggle here.
Physics concepts. Pressure as force per unit area, energy that is converted rather than "used up", and the difference between current and potential difference. Units such as N/m², J and W are easy marks to lose.
Explaining, not just stating. Sec 2 questions ask "explain why", in Science and in History. A one-word answer rarely earns full marks.
Get the assessment plan in January. Put WA and EOY dates on a shared calendar.
Keep Sec 1 notes. The EOY may test them.
Ask your child to teach you one topic a week. Explaining how a circuit works or why iron rusts shows quickly whether the idea is understood.
Read the subject criteria at the August briefing. Then compare them with Term 3 results, so there is time to act before October.
Talk about interest, not only prestige. A combination your child can sustain for two years usually gives better SEC grades than the heaviest one on offer.
Watch the load. If a child is staying up late every night in Sec 2, seven upper secondary subjects may be too many.
Common questions
What is in the Sec 2 science syllabus?
For G2 and G3, Sec 2 usually covers MOE Lower Secondary Science topics 9 to 16: forces and energy, heat, chemical changes, ecosystems, electrical systems, the digestive system, transport systems and the reproductive system. Schools set the exact order.
Is Sec 2 Science split into Physics, Chemistry and Biology?
No. Lower secondary Science is one integrated subject. The split into Physics, Chemistry and Biology starts in Sec 3, as Pure or Combined Science.
What is the difference between G2 and G3 Science in Sec 2?
Both follow the same MOE syllabus, but some content is optional for G2, such as the pressure formula, acids with metals and carbonates, and osmosis.
What is in the Sec 2 math syllabus at G3?
Expansion and factorisation, algebraic fractions, changing the subject of a formula, quadratic graphs and equations, simultaneous equations, similarity, Pythagoras' theorem, trigonometry, volume of cones and spheres, and statistics.
Are there mid-year exams in Sec 2?
No. MOE removed mid-year exams for all secondary levels by 2023. Sec 2 has weighted assessments through the year and an end-of-year exam in Term 4.
When do Sec 2 students choose their Sec 3 subjects?
In Term 4, after the end-of-year results in October. In 2026, schools briefed in August, collected choices in late October and released outcomes in November.
How do schools decide who gets Pure Science or A-Math?
By merit, choice and places available. Each school sets its own minimum marks, for example 65% or 70% in Science and Maths for Pure Sciences.
Can my child take Combined Science and still go to JC for science?
Yes. Some JCs accept the matching Combined Science component for H2 Physics, Chemistry or Biology. H2 Maths usually needs Additional Maths.
Is Triple Science better than two Pure Sciences?
Not automatically. It suits strong all-round science students. Two Pure Sciences keep the JC science route open with a lighter load, and not every school offers Triple Science.
Are there Sec 2 Science practice papers?
Our test papers library has no Lower Secondary Science papers yet. Use your school's past WAs and end-of-year papers, the textbook activity book, and the self-test questions in this guide.
Is Lower Secondary Science part of the SEC exam?
No. It is assessed by the school. The SEC science papers in Sec 4 are based on the upper secondary syllabuses, which build on the lower secondary topics.
What are the 2027 term dates for Sec 2?
Term 1 is 4 January to 12 March, Term 2 is 22 March to 28 May, Term 3 is 28 June to 3 September and Term 4 is 13 September to 19 November 2027.
Written by Theon Teo, Founder and Mathematics Tutor, The Singapore Syllabus. DigiPen Institute of Technology Singapore, Game Development & Computer Science · 3 years' Mathematics teaching (Primary & Secondary). More about Theon
For 2027. Free to ask.
Sec 2 home tutor for 2027
Tell us about your child in Sec 2 in 2027 and the subjects. 3 to 12 tutor profiles on WhatsApp within 16 hours, and you choose.
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