Senior schools in Ol'lessos Division School name Search School type All42Primary36Senior6 Koilot Day SecondaryC4 · Mixed · Day, Nandi East sub-county, Nandi CountyLelwak Boys SecondaryC2 · Boys · Boarding, Nandi East sub-county, Nandi CountyOllessos Mixed Day SecondaryC4 · Mixed · Day, Nandi East sub-county, Nandi CountySiwo SecondaryC4 · Mixed · Day, Nandi East sub-county, Nandi CountySochoi AIC Girls SecondaryC3 · Girls · Boarding, Nandi East sub-county, Nandi CountySochoi SecondaryC3 · Boys · Boarding, Nandi East sub-county, Nandi County KCSE results by school · Historical KCSE rankings for Ol'lessos 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 22 October 2026. Other schools come from our older directory. Each school page shows its dates.