- Arabia Boys Secondary School – Boys Boarding
- Arabia Girls Secondary – Girls Boarding
- Ashabito Secondary School – Boys Boarding
- Chief Mohamed Jari Secondary School – Mixed Boarding
- Elwak Girls Secondary School – Girls Boarding
- Elwak Secondary School – Boys Boarding
- Lafey Boys Secondary School – Boys Boarding
- Lafey Boys Secondary School – Boys Boarding
- Mandera Secondary School – Boys Boarding
- Moi Girls Secondary School – Girls Boarding
- Rhamu Girls Secondary School – Girls Boarding
- Sheikh Ali High School – Boys Boarding
- Takaba Boys’ Secondary School – Boys Boarding
- Takaba Girls’ Secondary School – Girls Boarding
- Wayam Secondary School – Boys Boarding