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 made online by the Ministry of Education.
They are either mixed or single-sex.
Here is a list of County Schools in Kwale County:
| NAME | KNEC CODE | TYPE | CATEGORY | |
| 1 | KAYA TIWI SECONDARY SCHOOL | 02105106 | Mixed | County |
| 2 | KWALE GIRLS HIGH SCHOOL | 02105109 | Girls | County |
| 3 | MWANAMBEYU GIRLS HIGH SCHOOL | 02105113 | Girls | County |
| 4 | LUKORE SECONDARY SCHOOL | 02105502 | Mixed | County |
| 5 | KICHAKASIMBA GIRLS SECONDARY SCHOOL | 02105503 | Girls | County |
| 6 | ROSE MWAKWERE GIRLS SECONDARY SCHOOL | 02105515 | Girls | County |
| 7 | NDAVAYA SECONDARY SCHOOL | 02109102 | Mixed | County |
| 8 | MOYENI SECONDARY SCHOOL | 02109103 | Mixed | County |
| 9 | TSUNZA SECONDARY SCHOOL | 02109106 | Mixed | County |
| 10 | MWALUKOMBE GIRLS SECONDARY SCHOOL | 02109108 | Girls | County |
| 11 | MIVUMONI SECONDARY SCHOOL | 02110202 | Mixed | County |
| 12 | BABLA DIANI SECONDARY SCHOOL | 02110204 | Mixed | County |
| 13 | GOMBATO SECONDARY SCHOOL | 02110213 | Mixed | County |
| 14 | MWAMZANDI SECONDARY SCHOOL | 02110214 | Mixed | County |
| 15 | TARU SECONDARY SCHOOL | 02127101 | Boys | County |
| 16 | MAZERAS HIGH SCHOOL | 02127102 | Boys | County |
| 17 | MAZERAS GIRLS MEMORIAL SECONDARY SCHOOL | 02127103 | Girls | County |