Public senior school
Oloolaiser High School
A senior school in Kajiado North sub-county, Kajiado County. It offers STEM, Social Sciences and Arts & Sports Science, with 26 subject combinations.
School details admission facts are for the 2026 intake
- Cluster
- C1Former national schools.
- Gender
- Boys
- Boarding or day
- Boarding
- 2026 fees
- KSh 53,554 or 40,535 per year, depending on the approved tierGovernment-set schedule, not an individual school invoice.
- Ownership
- Public
Not released yet for the January 2027 intake. Last year: 19 December 2025. KEMIS placement portal · Get an alert when they’re released.
KCSE results 2020–2024
Oloolaiser High School scored a mean of 8.12 (B-) in KCSE 2024, 3.3 points above the national average, down from 8.70 in 2023. Over 2019–2024 it ranks 84th of 559 schools in Kenya and 1st of 20 in Kajiado County with 3 or more years of published results.
| 2024 | 2023 | 2022 | 2021 | 2020 | |
|---|---|---|---|---|---|
| Mean | 8.117 | 8.700 | 8.753 | 7.872 | 8.012 |
| Grade | B- | B | B | B- | B- |
| Candidates | 249 | 227 | 154 | 219 | 158 |
Pathways and subject combinations checked 15 October 2026
STEM16 combinationsPure Sciences 4 · Applied Sciences 8 · Technical Studies 4
Social Sciences6 combinationsHumanities & Business Studies 6
Arts & Sports Science4 combinationsArts 1 · Sports 3
Subjects in these combinations · 19
Agriculture, Biology, Building & Construction, Business Studies, Chemistry, Christian Religious Education, Computer Studies, Electricity, Fasihi ya Kiswahili, General Science, Geography, History & Citizenship, Home Science, Literature in English, Media Technology, Physics, Power Mechanics, Sports & Recreation, Theatre & FilmSenior schools in Kajiado County offering STEM · Social Sciences · Arts & Sports Science
Codes and registration
- KNEC code
- 31500026
- UIC
- 3YA9
- School code
- R7040388
- Level
- Senior school
- Sponsor
- Central Government/DEB
- Student needs
- Ordinary
- Postal address
- 71 NGONG HILLS
Older records figures from the 2013 records; counts made in 2007
- Students enrolled
- 410
- Teaching staff
- 32
- Students per teacher
- 12.8:1 (2007)
- Acres
- 38
- Acreage per enrolment
- 10.8
Staff counted in 2007 ›
| Role | Men | Women | Total |
|---|---|---|---|
| TSC teachers | 10 | 21 | 31 |
| Local authority teachers | 0 | 0 | 0 |
| PTA and board teachers | 1 | 0 | 1 |
| Other teachers | 0 | 0 | 0 |
| Non-teaching staff | 16 | 5 | 21 |
About the school · written in 2013
Oloolaiser High School is a government boys’ boarding school located in Ngong, Ngong Township Sub location, Ngong Location, Ngong Division, Kajiado North Constituency in Kajiado County.
The school was established in 1967 and opened by the first president of the Republic of Kenya, Mzee Jomo Kenyatta as a harambee day mixed secondary school in the early 1970s. The present day Oloolaiser High School has grown and expanded exponentially to a three stream boarding boys only high school.The school stands on a 38 piece acre land with 640 students and 32.students.
The High School has prided itself in producing alumni who have ended up being notable leaders and pacesetters in their various fields in Kenya and beyond by offering uniquely competitive subjects that give their alumni that upper hand over learners from other schools.
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Data sources
The school description and other details come from the 2013 school data. Staff and facility figures show their recorded years. Classification and codes come from the 2026 senior-school register.
Register, pathways and fees
- Ministry of Education Grade 10 selection portal (KEMIS) pathways, combinations, emblem · checked 15 October 2026
- December 2025 senior-school list, row 38 classification and codes
- June 2025 senior-school register, row 1837 checked 1 October 2026
- Kenya Gazette Notice No. 1449 2026 fee schedule
KCSE results
- KNEC for 2006–2010, the school’s audit reports and newspapers since: every source, on the results page 2006–2024
2013 school data
- Kenya Open Data Initiative 2013 school data
Map
- © OpenStreetMap contributors; county outline: IEBC via UN OCHA map data