G2 vs G3 Math: What's the Difference, and Which Should Your Child Take?
By Desmond, Founder · Updated · 4 min read
If your child entered secondary school from 2024 onwards, you have probably seen “G2” and “G3” on their timetable or report book. These labels replaced the old Express, Normal (Academic) and Normal (Technical) streams. Here’s what they mean for Math, and how to think about which level is right for your child.
What are G1, G2 and G3?
Since 2024, all secondary schools have used Full Subject-Based Banding (Full SBB). Instead of being placed in one stream for every subject, students are in mixed form classes and take each subject at one of three levels:
- G3, the most demanding, broadly similar to the old Express level
- G2, broadly similar to the old Normal (Academic) level
- G1, broadly similar to the old Normal (Technical) level
A student can take different subjects at different levels. For example, Math at G3 and Science at G2.
At the end of Sec 4, students sit the Singapore-Cambridge Secondary Education Certificate (SEC), which replaces the O-Level and N-Level. The first SEC exams are in 2027. The certificate shows the level each subject was taken at. Our guide to the SEC vs the O-Level explains what else changes.
How is G3 Math different from G2 Math?
Both levels cover the same broad areas: number and algebra, geometry and measurement, and statistics and probability. The differences are in depth, pace and the kind of questions asked.
| G2 Math | G3 Math | |
|---|---|---|
| Pace | More time on each topic | Faster, with more topics per term |
| Depth | Focus on core skills and methods | Goes further, with more abstract algebra |
| Questions | More guided, often broken into steps | Longer, multi-step problems with less guidance |
| Leads to | G2 E Math in Sec 3 and 4, and G2 A Math in schools that offer it | G3 E Math in Sec 3 and 4, and G3 A Math as an option |
In general, a G3 Math student is expected to handle more algebra, more quickly, and to work out multi-step problems with less help.
How is your child’s level decided?
Your child’s starting level for each subject in Sec 1 is based on their PSLE results. MOE sets the rules for which levels are open to each student, and your child’s school will explain the options.
The level isn’t fixed for all four years. Students who do well can take a subject at a more demanding level, and schools review this as students progress. Ask your child’s school when these reviews happen and what results they look for.
Sec 2 results matter most, because they affect which Math subjects your child can take in Sec 3, including whether A Math is an option.
G2 or G3: how to decide
The right level is the one where your child is stretched but not lost. These questions help:
- How are their recent results? Look at a few tests, not just one.
- Are they keeping up with the pace, or always catching up?
- Where are the marks lost? Mistakes from gaps in understanding are different from careless slips, which are easier to fix.
- How does your child feel about Math? Confidence matters. A student who is always behind can lose interest in the subject altogether.
- What are they aiming for? If your child hopes to take A Math in Sec 3, especially at G3, a strong grounding in G3 Math makes that step much easier. G3 A Math is the route that best prepares students for higher-level Math after Sec 4.
Moving up from G2 to G3
Moving up a level is possible, and many students do it. Our founder, Desmond, started secondary school in the Normal (Academic) stream and moved up to Express in Sec 2. The system has long allowed students who find their footing later to move up.
What it usually takes:
- Strong, consistent results at the current level, over more than one test.
- Closing the content gap. G3 classmates may have covered some topics in more depth, so the move is easier with some catching up first.
- Good habits. The faster G3 pace rewards regular practice and asking for help early.
Common worries
Will G2 Math limit my child’s future?
Not on its own. There are many routes after secondary school, and levels can change along the way. But some courses set requirements on subjects and levels, so check MOE’s latest admission criteria for the routes your child is considering.
Is it better to do well at G2 or struggle at G3?
It depends on the gap. If your child is close to coping at G3, the stretch is usually worth it, with support. If G3 means constant failure and falling confidence, doing well at G2 and moving up later can be the better path.
If you’re unsure where your child stands, our free diagnostic assessment shows which topics are strong and which need work, so you can make the decision with real information.
