Extra County Schools in Kenya form the second tier of secondary schools; after National schools. They were formerly referred to as Provincial schools.
These schools are distributed all over the Country with each county having its share. The schools admit students from all over the country.
Extra county schools in Bomet county are classified into three clusters (C1), Category 2 (C2) and Category 3 (C3).
Most of the Schools are either of Mixed or single sex type.
Here are the Extra County Schools in County:
| School Code | School Name | Category | Type | Cluster |
| 25508102 | KABUNGUT SECONDARY SCHOOL | Extra County | Boys | C3 |
| 25533103 | KAPLONG BOYS HIGH SCHOOL | Extra County | Boys | C2 |
| 25533106 | CHEBILAT SECONDARY SCHOOL | Extra County | Boys | C2 |
| 25533203 | NDANAI SECONDARY SCHOOL | Extra County | Girls | C3 |
| 25551101 | KABOSON GIRLS SECONDARY SCHOOL | Extra County | Girls | C3 |
| 25551117 | CHEPALUNGU BOYS’ HIGH SCHOOL | Extra County | Boys | C3 |
| 25551207 | MOI SIONGIROI GIRLS’ SECONDARY SCHOOL | Extra County | Girls | C1 |
| 25563101 | SASETA GIRLS’ SECONDARY SCHOOL | Extra County | Girls | C1 |
| 25563102 | KOIWA BOYS HIGH SCHOOL | Extra County | Boys | C1 |
| 25563105 | BOITO SECONDARY SCHOOL | Extra County | Boys | C2 |
| 25563301 | KIMULOT SECONDARY SCHOOL | Extra County | Boys | C1 |
| 25583108 | LONGISA HIGH SCHOOL | Extra County | Boys | C3 |