The Kenya Certificate of Secondary Education (KCSE) is the national exam at the end of Form Four in the 8-4-4 system. Although CBC has replaced 8-4-4 in primary and junior school, KCSE continues until the last 8-4-4 cohorts finish secondary school, so tens of thousands of candidates still sit it every year. The 2026 KCSE began with orals and practicals on 19 October, and the main written papers run from Wednesday 28 October into late November.
Key 2026 KCSE Dates For The Big Three Sciences And Mathematics
| Paper | Date | Session | Time |
|---|---|---|---|
| Chemistry 233/1 | Monday 2 November | 2.00 p.m. | 2 h |
| Mathematics 121/1 | Tuesday 3 November | 8.00 a.m. | 2 h 30 min |
| Chemistry 233/2 | Wednesday 4 November | 8.00 a.m. | 2 h |
| Chemistry 233/3 (Practical) | Friday 6 November | 8.00 a.m. | 2 h 15 min |
| Mathematics 121/2 | Monday 9 November | 8.00 a.m. | 2 h 30 min |
| Biology 231/1 | Tuesday 10 November | 2.00 p.m. | 2 h |
| Biology 231/2 | Thursday 12 November | 8.00 a.m. | 2 h |
| Biology 231/3 (Practical) | Friday 13 November | 8.00 a.m. | 1 h 45 min |
From the KNEC 2026 KCSE timetable. First-session papers start at 8.00 a.m. and second-session papers at 2.00 p.m. Candidates with special needs get adjusted times on selected papers. Always follow the timetable issued by your school.
How KCSE Is Graded
Each subject is graded from A (plain) down to E, with plus and minus grades in between, and the overall mean grade is calculated from seven subjects according to KNEC’s current grading rules, which the Ministry of Education revised recently; check with your school which subjects count for your cohort. University entry depends on the mean grade and on cluster subject grades for each degree programme. A strong Mathematics and science performance opens the most doors, which is why those papers attract the most revision.
Exam Rules Candidates Must Know
- Arrive early: candidates are searched and seated before each session starts.
- Only authorised materials are allowed. Phones and other electronic devices are banned in the examination room.
- Write in blue or black ink, and check that your question paper has all its pages before you start.
- Exam malpractice leads to cancelled results and can lead to prosecution under the KNEC Act. “Leaked papers” sold online are scams.
The Last Two Weeks Before Your Papers
By now, new content matters less than exam technique. Sit full papers in the real time, at the real time of day, and mark them honestly. Keep a short list of the topics where you keep losing marks and revise only those each evening. Sleep matters more than late-night cramming: memory is consolidated during sleep, and a tired candidate misreads questions. On days with two papers, use the break to eat and rest rather than to revise the next subject in a panic. Finally, read every question twice and answer what is asked, not what you hoped would be asked.
Revision Resources
- KCSE Past Papers and Practice Papers, including online, auto-marked practice for Mathematics, Chemistry, Biology, Physics and English.
- All CBC Guide revision papers, including Grade 9 KJSEA and Grade 6 KPSEA practice.
If you have a younger child in the CBC system, our KJSEA parent hub explains how the new Grade 9 assessment and senior school placement differ from KCSE.