Senior schools in Kiambu County
- St Joseph The Worker Sec Sch Mang'u
C4 · Mixed · Day
- St Kevins Sec School
C4 · Mixed · Day
- St Linda's
Senior school · Mixed · Day
- St. Louis Academy
Senior school · Mixed · Day
- St Lucie Kiriri Girls Sec Sch
Senior school · Girls · Boarding
- St Mark High Sch
Senior school · Mixed · Day & Boarding
- St. Mark's Gatuanyaga Sec. Sch
Senior school · Mixed · Day
- St. Mary’s Girls – Thigio
C3 · Girls · Boarding · Ndeiya sub-county
- St. Mary’s Secondary School- Kiamworia
C3 · Girls · Boarding · Gatundu South sub-county
- St Mary's Thigio Sec
Senior school · Mixed · Boarding
- St. Michaels Sec Sch
Senior school · Mixed · Day
- Stonebic Secondary School
Senior school · Mixed · Boarding
- St Patricks Sec Nyanduma
C4 · Mixed · Day
- St. Paul Gachororo Secondary School
C4 · Mixed · Day · Juja sub-county
- St Paul Gatuanyaga Sec Sch
C3 · Boys · Boarding
- St. Paul Sec Sch
Senior school · Mixed · Day
- St. Paul's Educational Centre Sec.Sch
Senior school · Mixed · Day & Boarding
- St Paul's Sec
Senior school · Mixed · Day
- St. Peter's Boys Secondary
Senior school · Boys · Day
- St Peters Githiga Sec
Senior school · Mixed · Day
- St Peters High Sch
Senior school · Mixed · Day
- St. Peter's High Sch
Senior school · Mixed · Day & Boarding
- St. Peters High School Ndumberi
C4 · Mixed · Day · Kiambu sub-county
- St. Rita Wamwangi High School
C4 · Girls · Day · Gatundu South sub-county
- St Seraphim Of Sarov Secondary
Senior school · Mixed · Day
- St Stephen Ndiko Sec Sch
C4 · Mixed · Day
- St Thomas School Tigoni
Senior school · Girls · Boarding
- St. Tito High School
Senior school · Girls · Boarding
- St. Verena Ucekeini Girls Secondary School
C3 · Girls · Boarding · Gatundu South sub-county
- St Vincent Lioki Secondary Schoo
C4 · Mixed · Day · Githunguri sub-county
- Summer Springs Sec
Senior school · Mixed · Day & Boarding
- Sunrise Girls
Senior school · Girls · Boarding
- Theos Senior School
Senior school · Mixed · Day
- Theta Secondary School
C4 · Mixed · Day · Juja sub-county
- Thigio Sec
C3 · Boys · Boarding
- Thika Garrison Secondary Sch
C4 · Mixed · Day · Thika West sub-county
- Thika Girls Karibaribi Secondary Sch
C3 · Girls · Boarding · Thika West sub-county
- Thika High Sch
C1 · Boys · Boarding
- Thika High Sch For The Blind Sec
Senior school · Mixed · Boarding
- Thika Pentagon Academy Sec Sch
Senior school · Mixed · Day
- Thika Road Girls
Senior school · Girls · Boarding
- Thimbigua Secondary School
C4 · Mixed · Day · Kiambaa sub-county
- Thuita Secondary
C4 · Mixed · Day
- Tiekunu Sec
Senior school · Mixed · Day
- Tigoni Sec Sch
C4 · Mixed · Day
- Tinganga Secondary
C4 · Mixed · Day
- Treasure Sch Uplands
Senior school · Mixed · Day
- Trikha Girls Sec Sch
Senior school · Girls · Day & Boarding
- Tumaini Christian Sec Sch
Senior school · Mixed · Day & Boarding
- Uceke-Ini Sec Sch
Senior school · Mixed · Day & Boarding
- Uhuru Kenyatta Secondary School
C4 · Mixed · Day · Ruiru sub-county
- Umoja Secondary School
C4 · Mixed · Day · Limuru sub-county
- Uthiru Girls High School
C2 · Girls · Boarding
- Utugi Sec Sch
C4 · Mixed · Day
- Wamere Wanene Memorial High School
Senior school · Mixed · Day & Boarding
- Wamwangi Sec Sch
Senior school · Mixed · Day
- Wangige High School
C4 · Mixed · Day · Kabete sub-county
- Wangunyu Sec Sch
Senior school · Mixed · Day
- Wankan Academy Sec Sch
Senior school · Girls · Boarding
- William Ngiru Gitau Sec School
C4 · Mixed · Day
Historical KCSE rankings for Kiambu
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 1 October 2026.
- Other schools come from our older directory. Each school page shows its dates.