G2 or G3 Math? Your teen's level is a starting point, not a label
G3 Math is the more demanding subject level and carries the assessment standard of the former O-Level. G2 Math carries the standard of the former N(A)-Level and is a complete, rigorous course in its own right. Under Full Subject-Based Banding, which began with the 2024 Secondary 1 cohort, every subject is taken at a level matched to your teen’s strengths, and that level can be reviewed over time with the school’s guidance.
In this guide
- The big idea: subjects, not streams
- G1, G2 and G3 at a glance
- How a teen lands at G2 or G3 Math
- What G2 Math and G3 Math actually are
- Reading the grades: how G3 maps to G2
- Why the level matters after Secondary 4
- Key dates to know
- What helpful Math support looks like
- How PaceUP supports your teen
- Questions parents ask
If your child is somewhere between Secondary 1 and Secondary 3, you have probably heard “G1, G2 and G3” more often this year than almost any other piece of school vocabulary. These levels replace the Express, Normal (Academic) and Normal (Technical) labels that most parents grew up with, and they raise a very practical question: which level should my teen take Math at, and what happens if that answer changes?
This guide explains what the levels mean, how Math is organised at G2 and G3, what the 2027 Singapore-Cambridge Secondary Education Certificate (SEC) changes, and what good support looks like at each level. Every fact has been checked against the Ministry of Education (MOE) and the Singapore Examinations and Assessment Board (SEAB). Where details may still be updated, we say so.
The big idea: subjects, not streams
For a long time, a student’s stream set the level of almost everything they studied. Full Subject-Based Banding, often shortened to Full SBB, separates those two things. From the 2024 Secondary 1 cohort onwards, each subject is taken at G1, G2 or G3, so a teen can study Math at G3 while taking English at G2, or the other way round.
Posting Groups still exist at the Secondary 1 gate, and they map to the PSLE score ranges of the old streams. MOE is clear about their limited role, though: they are “only used for the purposes of admitting students into secondary schools” and for guiding the starting subject levels. Once inside school, teens join mixed form classes and spend about a third of their curriculum time together in Common Curriculum subjects such as Art, Music, PE, Character and Citizenship Education, Design and Technology, and Food and Consumer Education.
For Math, this means your teen’s level is a decision about one subject, made on the evidence of how they are doing in that subject.
G1, G2 and G3 at a glance
| Subject level | Assessment standard it continues | Grades awarded in the SEC | Lowest grade for a certificate |
|---|---|---|---|
| G3 | Former O-Level (Express) | A1, A2, B3, B4, C5, C6, D7, E8, 9 | E8 |
| G2 | Former N(A)-Level | 1, 2, 3, 4, 5, 6 | 5 |
| G1 | Former N(T)-Level | A, B, C, D, E | D |
Source: SEAB, Secondary Education Certificate page. The "former" labels describe the standard of assessment, not separate streams.
How a teen lands at G2 or G3 Math, and how it can change
At the start of Secondary 1, a teen’s Posting Group guides the levels they begin with, but their own PSLE result in a subject can open a more demanding option. MOE gives a clear example: a student who enters through Posting Group 2 with an AL5 in PSLE Math can take most subjects at G2 and still choose Math at G3 from day one.
After Secondary 1, moving up a level depends on two things: how your teen is performing in that subject, and a holistic assessment by the school of whether they can cope with the subject and their overall workload. Moving to a less demanding level is also possible, again in consultation with the school, and for compulsory subjects the school looks at learning attitude, well-being and the effect on later pathways.
Two practical points follow from this. First, the decision rests with the school, so tuition can build a teen’s readiness but cannot award a level. Second, because levels can be reviewed, the strongest position is a solid foundation in whichever level your teen is taking now.
What G2 Math and G3 Math actually are
SEAB lists separate syllabuses for each level, which is the clearest sign that G2 Math is not a toned-down G3 course. Each level has its own Mathematics syllabus and its own Additional Mathematics syllabus.
| Subject level | Mathematics (E Math) | Additional Mathematics (A Math) |
|---|---|---|
| G2 | Mathematics, syllabus K210 (former code 4045) | G2 Additional Mathematics, syllabus K232 (former code 4051) |
| G3 | Mathematics, syllabus K310 (former code 4052) | G3 Additional Mathematics, syllabus K341 (former code 4049) |
Source: SEAB lists of 2027 SEC syllabuses for G2 and G3. G1 is not covered in this guide.
The two Additional Mathematics syllabuses are connected on purpose. SEAB describes the G2 syllabus as preparing students for G3 Additional Mathematics, and describes the G3 syllabus as preparing students for H2 Mathematics at A-Level. In other words, a teen who does well at G2 has a recognised route to keep stretching.
On standards, SEAB states that there is “no change in the overall standards of examinations under the SEC”. The assessment format and standard carry over from the GCE examinations that the SEC replaces.
Reading the grades: how G3 maps to G2
Because teens can combine levels, you may come across grade mapping. SEAB uses it only when results from different levels must be added together for a post-secondary application, for example when a G3 grade needs to be expressed as a G2 grade.
| Grade at G3 | Counted as this grade at G2 |
|---|---|
| A1 to B3 | 1 |
| B4 to C6 | 2 |
| D7 | 3 |
| E8 | 4 |
| 9 | 5 |
Source: SEAB. Mapping is applied only when an aggregate is calculated across levels.
Why the level matters after Secondary 4
The level your teen takes Math at feeds into post-secondary options, but no single level closes a door on its own. MOE says that eligibility depends on a teen’s combination of subjects and levels, and not on the Posting Group they entered through. In fact, MOE’s own example shows a Posting Group 2 student qualifying for junior college by taking enough subjects at G3 and meeting the aggregate and subject requirements.
| Pathway | What MOE has announced | Applies from |
|---|---|---|
| Junior College | Admission moves from L1R5 of 20 or better to L1R4 of 16 or better, with the requirement for relevant subjects from both the Humanities and Mathematics/Science groups unchanged | 2028 JAE |
| Polytechnic Year 1 | A common benchmark of four G3 subjects and one G2 subject, with a revised aggregate of 22 points | 2028 intake |
| Polytechnic Foundation Programme | Eligibility widened for students with G3 or mixed G2 and G3 subjects, with the requirements computed at the G2 level | AY2028 intake |
| ITE Higher Nitec | The 2-year course is set at G2 (ELMAB3 aggregate of 19 or better); the 3-year course is set at G1 | AY2028 |
Source: MOE, Full Subject-Based Banding FAQ (last updated 29 December 2025). Criteria are reviewed from time to time, so confirm the latest details with your teen's school or on moe.gov.sg.
The balanced reading is this: students are encouraged to take each subject at as demanding a level as suits their needs, strengths and interests, and the school is there to help judge that. Pressure to chase a level for its own sake does not help anyone.
Key dates to know
| Year | What happens |
|---|---|
| 2024 | The Secondary 1 cohort becomes the first to enter under Full SBB, with G1, G2 and G3 subject levels |
| 2026 | The last year of the GCE O-Level and N-Level examinations |
| 2027 | The first Singapore-Cambridge Secondary Education Certificate (SEC) examinations, with English Language and Mother Tongue written papers in September and other written papers from October |
| January 2028 | First SEC results released in one common release |
| 2028 | Revised JC, polytechnic and ITE admission criteria take effect |
Sources: MOE Full SBB FAQ and SEAB Secondary Education Certificate page.
What helpful Math support looks like at each level
The right kind of help depends on where your teen is today. The table below sets out what tends to make the biggest difference in four common situations.
| Where your teen is | What tends to help most |
|---|---|
| Comfortable at G3 Math | Exposure to unfamiliar problem types, and early thinking about the E Math and A Math options in Secondary 3 |
| Wobbling at G3 Math | Finding out whether the gap is in a foundation topic, such as algebra, or in something recent, then fixing that specific gap before any change of level is considered |
| Steady at G2 Math | Mastering the G2 syllabus fully on its own terms, with harder questions added only when your teen is ready for them |
| Close to the G2 and G3 boundary | Strengthening the topics that separate the two syllabuses early, because Math topics build on each other and earlier gaps are easier to close |
Secondary 1 deserves special attention. The algebra habits formed in the first year underpin almost everything that follows, and the topics can look deceptively simple on the surface. Time spent here tends to repay itself in Secondary 3 and 4.
How PaceUP supports your teen at G2 and G3
PaceUP is the Oodles Math programme for Secondary 1 to 4, built around a simple belief: your teen should understand why a method works, not only how to apply it. Here is how that shows up in practice.
It starts with where your teen really is. Our diagnostic assessment identifies which topics need strengthening. It is not used to screen or stream, and PaceUP welcomes students of all levels from all schools. The result gives you clear information to bring to the conversation with your teen’s school about subject levels.
It is a bridge, not a leap. Secondary Math is more abstract than primary Math, and PaceUP closes the gap between the two so that your teen starts Secondary 1 steady. Teens who come up through +thinkingMath will recognise the way lessons are built, because the Oodles Math Method runs as one framework from K2 to Secondary 4.
It teaches more than one way through a problem. For algebra, geometry and the rest, your teen learns several approaches and the reasoning behind each one. A simple routine of Understand, Plan, Solve and Check sits behind every question, which builds the habit of thinking before calculating.
It practises under conditions that feel like the real paper. Worksheets follow the format and structure of secondary exams, and mock exams are run under real exam conditions, so the paper on the day feels familiar and not like a surprise.
It connects Math to your teen’s world. From the Singapore Flyer to hawker prices, abstract ideas are tied to things teens already know, which helps ideas stay in memory long after the exam is over.
A note on levels. Whether your teen takes Math at G2 or G3 is a decision for their school, made together with you. What PaceUP can do is build the foundation and the confidence that keep every option open.
Questions parents ask
Yes. Full SBB lets students take each subject at a level that fits their strengths, so mixed combinations are normal. The school guides the choices and looks at the whole picture, including workload.
It is possible. At the start of Secondary 1, a strong PSLE result in Math can allow a more demanding level. After that, MOE says a move up depends on performance in the subject and the school’s holistic assessment of whether the student can cope. The school makes the final decision.
It is a different syllabus with its own papers, pitched at the standard of the former N(A)-Level. It is a full course, and the most useful goal is to master the level your teen is taking, with the option to stretch when they are ready.
The SEC replaces the GCE N(T), N(A) and O-Level certificates with a single certificate that shows each subject and the level it was taken at. SEAB confirms that the mode of assessment and overall standards stay the same, and that G1, G2 and G3 use the same grading structures as N(T), N(A) and O-Level respectively.
Junior college admission is based on a teen’s subject and level combination and not on where they started. MOE’s example shows a Posting Group 2 student qualifying by taking enough subjects at G3 and meeting the aggregate and subject requirements. Your teen’s school can advise on the specific subjects involved.
PaceUP welcomes students of all levels from all schools. We begin with a diagnostic assessment to understand which topics need strengthening, then build from there.
See where your teen stands
Every teen can build confidence in Math with the right approach and a teacher who notices. Come and see what a PaceUP lesson looks like.
Learn more about the PaceUP programme for Secondary 1 to 4.
- Ministry of Education: Full Subject-Based Banding FAQ
- SEAB: Secondary Education Certificate (SEC)
- SEAB: 2027 SEC G2 syllabuses for school candidates
- SEAB: 2027 SEC G3 syllabuses
Facts last checked on 5 October 2026. MOE and SEAB may update details, so please confirm anything specific to your teen with their school.
