Secondary school
St. Mary's School - Secondary
A secondary school in Nairobi County. It offers STEM, Social Sciences and Arts & Sports Science, with 3 subject combinations.
School details
- Level
- Senior school
- Gender
- Mixed
- Boarding or day
- Day
- Ownership
- Private
- Sponsor
- Religious Organisation
- Student needs
- Ordinary
- Postal address
- 40580-00100 NRB
- School code
- P1010078
Next placements
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 2006–2010
St. Mary’s School - Secondary scored a mean of 5.52 (C) in KCSE 2010, 0.4 points above the national average, down from 6.17 in 2009.
| 2010 | 2009 | 2008 | 2007 | 2006 | |
|---|---|---|---|---|---|
| Mean | 5.523 | 6.172 | 5.658 | 6.667 | 6.936 |
| Grade | C | C | C | C+ | C+ |
| Candidates | 44 | 29 | 38 | 42 | 47 |
Pathways and subject combinations checked 15 October 2026
STEM1 combinationPure Sciences 1
Pure Sciences · 1Biology, Chemistry, PhysicsST1048
Social Sciences1 combinationHumanities & Business Studies 1
Humanities & Business Studies · 1Business Studies, Geography, History & CitizenshipSS2025
Arts & Sports Science1 combinationSports 1
Sports · 1General Science, Sports & Recreation, Theatre & FilmAS2038
Subjects in these combinations · 9
Biology, Business Studies, Chemistry, General Science, Geography, History & Citizenship, Physics, Sports & Recreation, Theatre & FilmSenior schools in Nairobi County offering STEM · Social Sciences · Arts & Sports Science
Older records figures from the 2013 records; counts made in 2007
- Students enrolled
- 368
- Teaching staff
- 42
- Students per teacher
- 8.8
- Acres
- 78
- Acreage per enrolment
- 4.7
Staff counted in 2007 ›
| Role | Men | Women | Total |
|---|---|---|---|
| Other teachers | 31 | 11 | 42 |
| Non-teaching staff | 3 | 3 | 6 |
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Data sources
The school description and other details come from the 2013 school data.
Register, pathways and fees
- Ministry of Education Grade 10 selection portal (KEMIS) pathways, combinations, emblem · checked 15 October 2026
KCSE results
- KNEC for 2006–2010: every source, on the results page 2006–2010
2013 school data
- Kenya Open Data Initiative 2013 school data
Map
- © OpenStreetMap contributors; county outline: IEBC via UN OCHA map data