Senior schools in Isiolo County
- Algani Girls Day Secondary SchoolC4 · Girls · Day, Garbatulla sub-county
- Aremiet Mixed Secondary SchoolC4 · Mixed · Day, Isiolo sub-county
- Banane Secondary SchoolSenior school · Mixed · Day
- Biliqi Nur Mixed Secondary SchoolC4 · Mixed · Day, Sericho sub-county
- Biliqo Mixed Secondary SchoolC4 · Mixed · Day, Merti sub-county
- Bisanadhi High SchoolC2 · Mixed · Boarding, Garbatulla sub-county
- Bulampya Day Secondary SchoolC4 · Mixed · Day, Isiolo sub-county
- Bulesa Secondary SchoolC3 · Mixed · Boarding, Merti sub-county
- Dadachabasa SecondaryC4 · Mixed · Day, Cherab sub-county
- Elsa Secondary SchoolC3 · Mixed · Boarding, Isiolo sub-county
- Gafarsa Mixed Day SecondaryC4 · Mixed · Day, Garbatulla sub-county
- Garbatula High SchoolSenior school · Mixed · Day & Boarding
- Garbatula High SchoolC1 · Boys · Boarding, Garbatulla sub-county
- Garbatulla Girls Day Secondary SchoolC4 · Girls · Day, Garbatulla sub-county
- Isiolo Barracks Secondary SchoolC4 · Mixed · Day, Isiolo sub-county
- Isiolo Boys Secondary SchoolC2 · Boys · Boarding, Isiolo sub-county
- Isiolo Girls Secondary SchoolC1 · Girls · Boarding, Isiolo sub-county
- Isiolo St. Mary's Secondary SchoolSenior school · Girls · Boarding
- Kambi Garba Mixed Day Secondary SchoolC4 · Mixed · Day, Isiolo sub-county
- Kinna Secondary SchoolSenior school · Mixed · Day & Boarding
- Kipsing Mixed Day Secondary SchoolC3 · Mixed · Boarding, Oldonyiro sub-county
- Korbesa Mixed Day Secondary SchoolC4 · Mixed · Day, Cherab sub-county
- Kulamawe Secondary SchoolC3 · Mixed · Boarding, Garbatulla sub-county
- Labarishereki Secondary SchoolC4 · Mixed · Day, Oldonyiro sub-county
- Leparua Mixed Day Secondary SchoolC4 · Mixed · Day, Isiolo sub-county
- Macci Boys SecondarySenior school · Boys · Boarding
- Macci Girls Secondary SchoolSenior school · Girls · Boarding
- Mck Kisima 78 Secondary SchoolC4 · Mixed · Day, Isiolo sub-county
- Merti Muslim Girls SecondaryC3 · Girls · Boarding, Merti sub-county
- Merti Secondary SchoolC3 · Boys · Boarding, Merti sub-county
- Mwangaza Girls Secondary SchoolC4 · Girls · Day, Isiolo sub-county
- Ngaremara Girls Secondary SchoolC3 · Girls · Boarding, Isiolo sub-county
- Ngaremara Secondary SchoolC3 · Boys · Boarding, Isiolo sub-county
- Oldonyiro Secondary SchoolC3 · Mixed · Boarding, Oldonyiro sub-county
- Sacred Heart Boys Secondary SchoolSenior school · Mixed · Day
- Sericho Secondary SchoolC3 · Mixed · Boarding, Sericho sub-county
- St. Pauls Kiwanjani Secondary SchoolC4 · Mixed · Day, Isiolo sub-county
- Uhuru Mixed Day Secondary SchoolC4 · Mixed · Day, Isiolo sub-county
- Waso Secondary SchoolC4 · Mixed · Day, Isiolo sub-county
Sources
- Senior schools: Ministry of Education lists for the 2026 intake, from the June 2025 list and the December 2025 C1, C2, C3 and C4 lists. Checked 14 October 2026.
- Other schools come from our older directory. Each school page shows its dates.