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.
Kabianga boys and Kipsigis girls are the national schools in Kericho county
Extra county secondary schools in Kericho county are grouped into three clusters; cluster one(C1), cluster two(C2) and cluster three (C3).
Kericho High School, Moi Tea Girls Secondary School, Litein High School among other schools form cluster one schools in Kericho County.
| S/N | SCHOOL CODE | SCHOOL NAME | TYPE | CLUSTER |
| 1. | 28512101 | Kericho High School | Boys | C1 |
| 2. | 28512112 | Moi Tea Girls Secondary School | Girls | C1 |
| 3. | 28522501 | Tengecha Boys High School | Boys | C1 |
| 4. | 28522505 | Litein High School | Boys | C1 |
| 5. | 28522509 | Tengecha Girls Secondary School | Girls | C1 |
| 6. | 28522520 | A.I.C Litein Girls Secondary SChool | Girls | C1 |
| 7. | 28539105 | Kipkelion Girls’ High | Girls | C1 |
| 8. | 28553103 | Sosiot Girls’ Secondary School | Girls | C1 |
| 9. | 28571201 | Londiani Boys Secondary School | Boys | C1 |
| 10. | 28571202 | Londiani Girls’ Secondary School | Girls | C1 |
| 11. | 28571203 | Sacred Hill Girls’ High School – Londiani | Girls | C1 |
| 12. | 28512104 | Kericho Tea Secondary School | Boys | C2 |
| 13. | 28522512 | Korongoi Girls’ Secondary | Girls | C2 |
| 14. | 28522515 | Chelilis Girls Secondary School | Girls | C2 |
| 15. | 28553102 | Cheptenye Secondary School | Boys | C2 |
| 16. | 28575203 | Soliat Boys’ Secondary School | Boys | C2 |
| 17. | 28575204 | Moi Kipsitet Girls Secondary School | Girls | C2 |
| 18. | 28522504 | Chebwagan Secondary School | Boys | C3 |
| 19. | 28522508 | Cheborge Boys High School | Boys | C3 |
| 20. | 28553104 | Kaborok Girls High School | Girls | C3 |
| 21. | 28553113 | Chepkoton Girls Secondary School | Girls | C3 |
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List of best performing Extra County schools in Siaya County
List of best performing Extra County Secondary schools in Homa Bay County
List of best performing Extra County Secondary schools in Kisii County
List of best performing Extra County Secondary schools in Kisumu County
List of best performing Extra County schools in Kericho County
List of best performing Extra County schools in Nakuru County
List of best performing Extra County schools in Uasin Gishu County
List of best performing Extra County schools in Trans Nzoia County
List of best performing Extra County schools in Nairobi County
List of best performing Extra County Secondary Schools in Nyeri County
List of best performing Extra County Schools in Murang’a County and their Codes