Public senior school
St. Mary’s School, Yala
Also listed as St. Mary’s Yala Secondary.
A senior school in Gem Yala sub-county, Siaya County. It offers STEM, Social Sciences and Arts & Sports Science, with 45 subject combinations.
School details admission facts are for the 2026 intake
- Cluster
- C1Ministry of Education senior-school cluster.
- 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
- Postal address
- -
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 the latest 5 years we hold
St. Mary’s School, Yala scored a mean of 8.02 (B-) in KCSE 2025, 3.2 points above the national average, up from 8.00 in 2024. Over 2022–2025 it ranks 111th of 559 schools in Kenya with 3 or more years of published results.
| 2025 | 2024 | 2023 | 2022 | 2010 | |
|---|---|---|---|---|---|
| Mean | 8.023 | 8.002 | 8.002 | 7.228 | 8.974 |
| Grade | B- | B- | B- | C+ | B |
| Candidates | – | 584 | 552 | 423 | 193 |
Pathways and subject combinations checked 15 October 2026
STEM24 combinationsPure Sciences 4 · Applied Sciences 16 · Technical Studies 4
Pure Sciences · 4Agriculture, Biology, ChemistryST1042
Biology, Business Studies, ChemistryST1045
Biology, Chemistry, Computer StudiesST1046
Biology, Chemistry, PhysicsST1048
Applied Sciences · 16Agriculture, Business Studies, ChemistryST2046
Agriculture, Business Studies, Computer StudiesST2047
Agriculture, Business Studies, ElectricityST2048
Agriculture, Business Studies, PhysicsST2053
Agriculture, Chemistry, Computer StudiesST2059
Agriculture, Computer Studies, ElectricityST2060
Agriculture, Computer Studies, GeographyST2062
Agriculture, Computer Studies, PhysicsST2067
Agriculture, Electricity, GeographyST2080
Agriculture, Geography, PhysicsST2075
Biology, Business Studies, Computer StudiesST2097
Biology, Computer Studies, GeographyST2011
Business Studies, Computer Studies, ElectricityST2001
Business Studies, Computer Studies, GeographyST2003
Business Studies, Computer Studies, PhysicsST2007
Computer Studies, Geography, PhysicsST2018
Technical Studies · 4Biology, Electricity, GeographyST3014
Chemistry, Electricity, GeographyST3017
Computer Studies, Electricity, GeographyST3006
Electricity, Geography, PhysicsST3026
Social Sciences15 combinationsLanguages & Literature 1 · Humanities & Business Studies 14
Languages & Literature · 1Business Studies, Fasihi ya Kiswahili, Literature in EnglishSS1080
Humanities & Business Studies · 14Business Studies, Christian Religious Education, Fasihi ya KiswahiliSS2109
Business Studies, Christian Religious Education, FrenchSS2112
Business Studies, French, History & CitizenshipSS2097
Business Studies, Geography, History & CitizenshipSS2025
Business Studies, Geography, Literature in EnglishSS2061
Business Studies, History & Citizenship, Literature in EnglishSS2100
Christian Religious Education, Computer Studies, History & CitizenshipSS2064
Christian Religious Education, Fasihi ya Kiswahili, GeographySS2035
Christian Religious Education, Fasihi ya Kiswahili, History & CitizenshipSS2069
Christian Religious Education, French, History & CitizenshipSS2075
Christian Religious Education, Geography, History & CitizenshipSS2019
Computer Studies, Geography, History & CitizenshipSS2024
Fasihi ya Kiswahili, Geography, History & CitizenshipSS2018
Geography, History & Citizenship, Literature in EnglishSS2004
Arts & Sports Science6 combinationsArts 1 · Sports 5
Arts · 1Literature in English, Sports & Recreation, Theatre & FilmAS1053
Sports · 5Fasihi ya Kiswahili, Sports & Recreation, Theatre & FilmAS2031
French, Music & Dance, Sports & RecreationAS2051
French, Sports & Recreation, Theatre & FilmAS2034
General Science, Sports & Recreation, Theatre & FilmAS2038
Literature in English, Music & Dance, Sports & RecreationAS2047
Subjects in these combinations · 17
Agriculture, Biology, Business Studies, Chemistry, Christian Religious Education, Computer Studies, Electricity, Fasihi ya Kiswahili, French, General Science, Geography, History & Citizenship, Literature in English, Music & Dance, Physics, Sports & Recreation, Theatre & FilmSenior schools in Siaya County offering STEM · Social Sciences · Arts & Sports Science
Codes and registration
- KNEC code
- 42749101
- UIC
- 7SG8
- School code
- M6090372
- Level
- Senior school
- Sponsor
- Religious Organisation
- Student needs
- Ordinary
School figures most recent counts
- Students enrolled
- 2,815
- Teaching staff
- 43
- Classrooms
- 45
- Dormitories
- 21
- Laboratories
- 6
- Computer laboratories
- 4
- Libraries
- 1
- Dining halls
- 1
- Toilets
- 161
Staff counted in 2007 ›
| Role | Men | Women | Total |
|---|---|---|---|
| TSC teachers | 28 | 10 | 38 |
| PTA and board teachers | 4 | 1 | 5 |
| Non-teaching staff | 20 | 5 | 25 |
Something out of date? Suggest a correction. Work at this school?
Data sources
School history and updated details use the sources below. Other details come from the 2013 school data. 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 172 classification and codes
- June 2025 senior-school register, row 8149 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 2006–2025
2013 school data
- Kenya Open Data Initiative 2013 school data
Map
- © OpenStreetMap contributors; county outline: IEBC via UN OCHA map data