In less than a year, my grades went from the bottom of the class and getting f9s to almost topping my class with A1s. Teachers are really friendly and make sure you understand the topic before moving on, willing to take the time to help you grasp what is taught!
AY2027 · Katong & Hougang
Our 2027 academic year starts in November 2026
2027 lessons begin in November, in your child’s weekly class, starting with the topics students find hardest. Every class is taught the same way, The Vigilante Method: we find what your child is really getting wrong, train the method until it is automatic, and rescue the grade on exam day.
Start by 30 Nov 2026 and keep all four
- $50 registration fee waived.
- 2026 fees for all of 2027. The 2027 list is $5 a lesson more, so about $240 saved over the year.
- No deposit. From 1 Jan 2027, new students place a 4-lesson deposit ($200–$380).
- Our Post Trial Analysis & Feedback with your child’s trial lesson.
Start by 31 Dec 2026 and you still keep the last three.
Trials are paid, by appointment, and include our Post Trial Analysis & Feedback.
Results
Results, in our students’ own words
Real messages from the class chats. Names hidden.
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Individual results, not typical, and never guaranteed. SEAB and the schools set the papers, not us.
Mr Lai’s classes, over 10 years and more than 600 students
84%
distinction across all students
97%
improved by at least 2 grades
90%
improved by at least 3 grades
How we teach
The Vigilante Method
We find what your child is really getting wrong, train the method until it is automatic, and rescue the grade on exam day.
Phase 1
Unmask
The problem isn't your child. We find what it really is.
Phase 2
Train
Understand the why, then do it the same way every time.
Phase 3
Rescue
Right under pressure, not just right at home.
What you will see, and when
What usually happens, not a promise.
Weeks 1 to 2
We find the problem
After the trial lesson, we tell you exactly which topics and which kinds of questions your child is losing marks on.
Weeks 3 to 6
Things start to make sense
Your child understands topics that used to confuse them. Homework gets easier. You will hear it from them first.
By the next WA
Marks go up
Usually within a term. After the test, we message you to say what improved and what we are working on next.
3 to 6 months
The grade changes
Steady improvement test after test, until the grade itself moves. The results page shows what that looked like for real students.
Fees and start dates
What your child starts with
Tap your child’s level in 2027.
Choose a level above to see the topics we start with and its fee.
G2 and G1 classes start with topics suited to their syllabus, at the same fee.
Why start 2027 in November?
No school pressure
No homework, tests or CCA in the holidays, so we can go in depth instead of rushing.
The hardest topics first
Skills that only stick with steady practice, not facts to memorise. Learnt properly now, they stay learnt.
A calmer Term 1
When school reaches these topics, your child has already practised them.
Fees, with nothing hidden
Per 4 lessons. Same rate for G3, G2 and G1. No GST.
| Level | By 31 Dec 2026 | From 1 Jan 2027 |
|---|---|---|
| Primary 3–44 × 1.5h | $180 | $200 |
| Primary 5–64 × 2h | $260 | $280 |
| Sec 1–24 × 2h | $280 | $300 |
| Sec 3–5 (E or A-Math)4 × 2h | $300 | $320 |
| Double Math (E + A-Math)8 × 2h | $560 | $600 |
| JC H1/H24 × 2h | $360 | $380 |
- Start by 31 Dec 2026 and your child keeps these 2026 fees for the whole of 2027.
- Registration fee $50, waived if you start by 30 Nov 2026 or a current Math Vigilante family refers you.
- No material or printing fees, ever. No GST.
- Deposit: none if you start by 31 Dec 2026. From 1 Jan 2027, new students pay a deposit of 4 lessons, which pays for the final month when one month’s notice is given.
- Financial assistance (FAS) is available case by case: show us proof, and we will see what we can do, subject to availability. WhatsApp us for more info.
- JC H1 and H2 Math classes currently run at our Katong centre.
- Already with us? Bring a friend. When a family you refer has stayed for 2 months, your child gets one free lesson. They pay no registration fee. No limit.
Our notes
A look at our notes
Pages from our Secondary revision sheets. Every chapter gets one: the facts, the traps, and what the examiner wants to see.
Swipe for more →
Parents also use our free guides: PSLE score and L1R4 calculators, the SEC exam, A-Math, G2 Math →
Who teaches
Mr Zac Lai
Principal, Head of Curriculum
- 10+ years of teaching, more than 600 students.
- NUS Merit Scholar (top 1% of the cohort), double degree with First Class Honours.
- Writes the notes and worksheets every Math Vigilante class uses, and our parent guides and exam answers.
Across more than a decade of teaching, we have developed strategies and notes that are adaptable and easy to understand. PSLE Math is about breaking questions down with models and story-telling; Secondary E-Math and A-Math are conquered with the right skillset and practice.
This isn’t a normal Math tuition centre. We were the first N-Level Math focus centre in Singapore, and that pedagogy helps weaker students in our O-Level classes too.
Verified on Google
What parents and students say on Google
Public Google reviews of our centres, shown word for word.
Math vigilante has improved my math results from a consistent f9 to e8 and now to a1!! The environment here is very good to be productive and the teachers here are beyond excellence! Highly recommended for your child to come here and improve their grades drastically!!In addition,they give really usefull notes that helps students understand the topics taught better! And the teachers would willingly help your child with any related enquirers and questions!!!!
I never passed A math since Sec 3, but I really improved and got A1 for my recent Sec 4 WA2 as the tutors here were able to explain concepts very clearly allowing me to understand the subject very well very easily and quickly.
Mr lai was very supportive and helped me tremendously in preparing for my o-levels. He even gave me advice on my future career courses and helped me gain a greater understanding of my choices that I could choose to pursue. Before I went to tuition, my A-math was F9, but after going my A math improved and now it's around B4 to A1. A 10/10 tuitor. (+_+)
As a student who used to hate math because i didn’t understand it, mr kelvis helped me understand math in a fun and effective way and i went from failing math to getting A1!
I improved from C5 to A1 for my WA2! The lessons at Math Vigilante helped me a lot to understand the concepts I used to struggle with, for example, algebra. The teachers can explain clearly and are really nice too!
I improve my Amath score from F9 to A2 ! The lessons at Math Vigilante really helped understand concepts I struggled with and eventually allowing me to score ! The tutors explain everything clearly and helped me understand rlly quick
I improved from C6 to A1 in my recent WA2! the teacher explains the questions slowly so I can better understand and is very patient. This helps me feel more confident in my exams.
I used to be failing at maths but ever since I have join math vigilante, my math has improved to a B3 which is a big improvement from WA2 to WA3. The teachers are extremely useful in helping since they always make sure I understand the questions
I used to get an F9 for my math exams but for this year’s exam I got an A1 for my recent WA. Mr Lai really help pull my grades up and got me my first A1 in maths. His explanation is very clear and he makes difficult math concepts easier to understand.
Thanks to my teacher mr kelvis, I managed to go from a just pass to a2 for my n levels. Math vigilante was very helpful in terms of understanding and teacher patience and the homework was very useful
Mr Lai tutored me for H2 Math for over a year. He is very patient and explains the concepts clearly. He also gives a wide range of questions to practice. With his help, I have improved by many grades and attained an ‘A’ for A Levels. Thank you Mr Lai! ☺️
I improved from c5 to a1 for my sec one wa 2 exam after joining math vigilante. The tuition teacher also very good at explaining questions and always made time to go through my mistakes
Mr Lai is a very experienced teacher that helped me understand difficult math concepts through simplified yet effective methods, and allowing me to keep practicing math problems through the worksheets given in class so that I could master the techniques easily!
Reviews are shown as written by parents and students on Google. Read them all on Google Maps: Katong · Hougang Central.
The 2027 timetable is out
See each centre’s days and times by level, then tell us which slot works. Continuing families choose first; new families next. Timings are confirmed with every family before the new year.
Questions
Questions parents ask
1Is the trial lesson free?
No, and here is why.
Our classes are small, so your child is not an extra seat in a big room. On trial day your child gets the same tutor, the same attention and the same notes and worksheets as every other student, and the tutor plans around your child from the first lesson.
A big centre can give away a free seat because one more child in a hall of forty changes nothing for them. For us, every seat is a real lesson.
So you pay the normal lesson fee, your child sits in a real class, and afterwards you get the written Post Trial Analysis & Feedback. You will know exactly where your child stands before you decide anything.
2What is in the Post Trial Analysis & Feedback?
A short written note from the tutor after the trial: what your child does well, where the marks are leaking, and what we would work on first.
3My child is going to Sec 1 in 2027. Should we wait for the posting results?
No need. Our 2027 Sec 1 Math classes begin on Saturday 31 October 2026, straight after the PSLE break. G2 and G3 students learn together, so the level your child is posted to in December changes nothing. Our PSLE Score Calculator turns your child's marks into the likely score and posting group.
4My child is in G2 or G1 (NA/NT). Is this for them?
Yes. Same fee as G3, and G2 and G1 classes start with topics suited to their syllabus. We were the first N-Level Math focus centre in Singapore, and our guide explains how schools move students from G2 to G3 Math.
5What is the SEC exam?
From 2027, the O-Level and N-Level become one exam, the SEC. The 2024 Sec 1 cohort sits the first SEC at the end of Sec 4 in 2027, graded G1, G2 or G3 by subject. Our parent guide explains it, with an L1R4 calculator for JC admission under the 2028 rules.
6Does my child need A-Math?
It is not compulsory and not needed for poly, but JC H2 Math expects it in practice. It starts in Sec 3, so the decision comes at the end of Sec 2.
7School just finished the year. Why start in November?
Because there is no homework, tests or CCA in the way, so we can go in depth on the hardest topics of the new level. When school reaches them in Term 1, your child has already practised them.
8Is there a deposit?
It depends on when your child enrols.
- Enrolment before 1 January 2027:no deposit.
- Enrolment from 1 January 2027:new families prepay four lessons.
That deposit pays for the final month when you give notice.
9Which branch should we choose?
Katong (Katong Shopping Centre) for the east; Hougang Central (806 Hougang Central) and opposite Hougang CC (Blk 19 Hougang Avenue 3) for the north-east. Tell us where you live and your child's level, and we will suggest the nearest class with a seat.
Where
Three centres in the east and north-east
Hougang (opp Hougang CC) NEW!
Blk 19 Hougang Avenue 3, #01-185, S530019
Our newest centre. Same tutors, same notes.
Mon–Fri 2:30pm–9:30pm · Sat–Sun 9:00am–6:00pm · More about our Katong centre and our two Hougang centres.
Start 2027 in November
Start by 31 Dec to keep 2026 fees for all of 2027. Tell us your child’s level and preferred centre.
The form takes two minutes; we confirm the slot on WhatsApp.