Public senior school

Lenana School

A senior school in Dagoretti sub-county, Nairobi County. It offers STEM, Social Sciences and Arts & Sports Science, with 16 subject combinations.

School details admission facts are for the 2026 intake

Cluster
C1
Former national schools.
KNEC code
20400001
UIC
3KSM
Level
Senior school
Gender
Boys
Boarding or day
Boarding
Ownership
Public
Sponsor
Central Government/DEB
Student needs
Ordinary
Postal address
30253 NAIROBI
School code
N1010089
2013 boarding or day
Day
2026 fees
This school’s approved fee schedule is not established here.
Government-set schedule, not an individual school invoice.
Next placements
Not released yet for the January 2027 intake. Last year: 19 December 2025. KEMIS placement portalGet an alert when they’re released.

Pathways and subject combinations checked 15 October 2026

STEM10 combinations Pure Sciences 2 · Applied Sciences 3 · Technical Studies 5

Pure Sciences · 2

  • Biology, Building & Construction, ChemistryST1044
  • Biology, Chemistry, PhysicsST1048

Applied Sciences · 3

  • Agriculture, Aviation, GeographyST2070
  • Agriculture, Building & Construction, Computer StudiesST2058
  • Business Studies, Computer Studies, PhysicsST2007

Technical Studies · 5

  • Biology, Business Studies, Metal WorkST3084
  • Business Studies, Geography, Media TechnologyST3068
  • Business Studies, Physics, Wood WorkST3038
  • Chemistry, Geography, Metal WorkST3099
  • Chemistry, Geography, Power MechanicsST3015
Social Sciences3 combinations Humanities & Business Studies 3

Humanities & Business Studies · 3

  • Business Studies, Geography, History & CitizenshipSS2025
  • Business Studies, Geography, Literature in EnglishSS2061
  • Christian Religious Education, Geography, History & CitizenshipSS2019
Arts & Sports Science3 combinations Arts 2 · Sports 1

Arts · 2

  • Christian Religious Education, Fine Arts, Theatre & FilmAS1005
  • Computer Studies, Fine Arts, Music & DanceAS1021

Sports · 1

  • General Science, Sports & Recreation, Theatre & FilmAS2038
Subjects in these combinations · 21
Agriculture, Aviation, Biology, Building & Construction, Business Studies, Chemistry, Christian Religious Education, Computer Studies, Fine Arts, General Science, Geography, History & Citizenship, Literature in English, Media Technology, Metal Work, Music & Dance, Physics, Power Mechanics, Sports & Recreation, Theatre & Film, Wood Work

How subject selection works: what pathways, tracks and the codes mean.

Figures from the 2013 records; counts made in 2007

Students enrolled
981
Teaching staff
53
Students per teacher
18.5:1 (2007)
Acres
210
Acreage per enrolment
4.7

Staff counted in 2007

RoleMenWomenTotal
TSC teachers163551
Local authority teachers000
PTA and board teachers112
Other teachers000
Non-teaching staff551368

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About the school

Lenana School is a high school in Nairobi, Kenya.
It was formed in 1949 by colonial governor Philip Euen Mitchell in 1949, known then as the Duke of York School. The first students were briefly housed at the then British colonial Governor’s House which is the current State House as they waited for the school’s completion. The founding principal/headmaster was R.H. James.
Originally the school was reserved for white students only within the racial system of colonial Kenya, but after independence in 1963 there were gradual changes that led to the first few black and Asian students being admitted in the mid 1960s.
The school was renamed Lenana School in 1969 after the legendary Laibon Lenana who was the central human figure in the Maasai religious system and ruled around the end of the 19th century through to the early 20th century. The first Kenyan headmaster (principal) of the school was Mr. James Kamunge.
Lenana School currently has 1200 students. In 2006, it was ranked 26th best high school in Kenya based on Kenya Certificate of Secondary Education results.Through the 1980s and into the 21st century, Lenana School has maintained high academic standards ranking in the top 10 and top 20 respectively for many years in the 1980s. The current School Principal is Mr. William Mwangi who is deputised by Mr. Silas Wandera.

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.