In Kenya, extra county schools fall in the second tier after national schools. In recent years, cases have emerged where extra county schools perform better than national school. Nakuru Girls and Utumishi Academy are the national schools in Nakuru county Jomo Kenyatta Boys High School, St. Bakhita Bahati Girls Secondary School, Mary Mount Secondary School among other schools form cluster one schools in Nakuru County.Extra county secondary schools in Nakuru county are grouped into three clusters; cluster one(C1), cluster two(C2) and cluster three (C3).
| S/N | SCHOOL CODE | SCHOOL NAME | TYPE | CLUSTER |
| 1. | 27536201 | Jomo Kenyatta Boys High School | Boys | C1 |
| 2. | 27536202 | St. Bakhita Bahati Girls Secondary School | Girls | C1 |
| 3. | 27536241 | Jomo Kenyatta Girls High School | Girls | C1 |
| 4. | 27537301 | Naivasha Girls Secondary School | Girls | C1 |
| 5. | 27537303 | Naivasha High School | Boys | C1 |
| 6. | 27538204 | Mary Mount Secondary School | Girls | C1 |
| 7. | 27538208 | Molo Academy | Boys | C1 |
| 8. | 27564101 | Njoro Boys High School | Boys | C1 |
| 9. | 27564102 | Njoro Girls’ Secondary School | Girls | C1 |
| 10. | 27570201 | Koelel Secondary School | Boys | C1 |
| 11. | 27537319 | Lake Naivasha Girls Secondary School | Girls | C2 |
| 12. | 27538101 | Michinda Secondary School | Boys | C2 |
| 13. | 27552002 | Solai Boys’ Secondary School | Boys | C2 |
| 14. | 27552018 | Aic Morop Girls’ Secondary School | Girls | C2 |
| 15. | 27552032 | Kirobon Girls Secondary School | Girls | C2 |
| 16. | 27552049 | Kirobon Boys’ High School | Boys | C2 |
| 17. | 27564108 | Larmudiac Secondary School | Mixed | C2 |
| 18. | 27536203 | Bahati Pcea Secondary School | Girls | C3 |
| 19. | 27537501 | Maai-Mahiu Boys Secondary School | Boys | C3 |
| 20. | 27537505 | Maai-Mahiu Girls Secondary School | Girls | C3 |
| 21. | 27538102 | Elburgon Secondary School | Mixed | C3 |
| 22. | 27565301 | Keringet Secondary School | Mixed | C3 |
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