O-level practice · Sec 3–4 · Singapore
Turn weaknesses into strengths. O-level practice that targets exactly what you get wrong.
PrepLab gives Sec 3 and Sec 4 students short, focused practice sets built around real Singapore O-level question formats — A-Math, E-Math, Physics, Chemistry and Biology. Every session logs what you get wrong, so the next one targets exactly where you need work.
Why it works
Your mistakes become your study list
Every wrong answer is saved automatically. PrepLab surfaces your most repeated mistakes so you’re always working on what actually needs fixing — not just what’s next in the book.
15 minutes a day beats 3-hour cramming
Short daily sessions compound. One week of consistent practice gives PrepLab enough data to know your weak topics better than you do.
See exactly where you stand, by subject
Track accuracy across A-Math, E-Math, Biology, Chemistry, and Physics. Know which topics to drill before it shows up on the actual paper.
Common questions
What subjects does PrepLab cover?
A-Math, E-Math, Biology, Chemistry, and Physics — all mapped to the Singapore O-level syllabus for Sec 3 and Sec 4.
Is this free?
Yes, PrepLab is free to use. Sign up and start practising immediately.
Is the content aligned to the MOE syllabus?
Yes. Every question is built around O-level exam formats and topics for Sec 3–4 students.
How should I revise for O levels if I don’t know where to start?
Start with a 15-minute PrepLab session in your weakest subject. After a few sessions PrepLab builds your personal mistake list, so every session after that tells you exactly which topics to revise next — no study timetable guesswork.
Do my parents need to sign up too?
No. You can sign up and practise independently. If your parents want to track your progress, they can link a parent account later using a code you generate.
How is this different from just doing Ten Year Series?
TYS gives you questions. PrepLab tells you which questions you personally need most — because it tracks your mistakes and builds a picture of your weak spots over time. It gets more useful the more you use it.