Isabela City Public High School

Basilan National High School - Leroy Brown, East Side
Basilan National High School- Malamawi National High SchoolAnnex - Sta Barbara, Malamawi
Basilan National High School- Night - Leroy S. Brown, East Side
Begang National High School - Begang
Calvario Peak (Annex) - Kapatagan Grande
Isabela City National Hihg School - Cabunbata
Kumalarang National High School - Kumalarang
Tandung Ahas National High School(Begang NHS-Tandung Ahas Annex) - Tandung Ahas