County secondary schools in Kenya form the third tier after national and extra-county schools respectively.
Most of Kenyan learners are absorbed by these schools.
Admission to county schools is done online by the Ministry of Education.
They are either mixed or single-sex.
Here is a list of county secondary schools in Nakuru County:
| KNEC CODE | NAME | TYPE | CATEGORY | |
| 1 | 27511544 | ST. MARIA VERONICA GIRLS HIGH SCHOOL | Girls | County |
| 2 | 27537333 | MAGEREZA ACADEMY | Boys | County |
| 3 | 27537502 | KIAMBOGO SECONDARY SCHOOL | Mixed | County |
| 4 | 27538206 | P.C.E.A. KAMBALA GIRLS HIGH SCHOOL | Girls | County |
| 5 | 27552019 | MAMA NGINA KENYATTA SECONDARY SCHOOL | Mixed | County |
| 6 | 27564125 | ST. MARK VICTORY GIRLS HIGH SCHOOL | Girls | County |
| 7 | 27565314 | SIWOT GIRLS SECONDARY SCHOOL | Girls | County |
| 8 | 27565401 | OLENGURUONE SECONDARY SCHOOL | Mixed | County |
| 9 | 27565402 | MOI SECONDARY SCHOOL, AMALO | Mixed | County |
| 10 | 27565404 | CHEPTUECH SECONDARY SCHOOL | Boys | County |
| 11 | 27565405 | EMITIK GIRLS SECONDARY SCHOOL | Girls | County |
| 12 | 27570205 | COULSON SECONDARY SCHOOL | Boys | County |
| 13 | 27570207 | COULSON GIRLS’ SECONDARY SCHOOL | Girls | County |
| 14 | 27570234 | GILGIL GIRLS’ HIGH SCHOOL | Girls | County |
| 15 | 27580032 | KIPKORIS GIRLS SECONDARY SCHOOL | Girls | County |
