Public senior school

St. Mary’s Girls – Thigio

Also listed as St Mary’s Thigio Secondary.

A senior school in Ndeiya sub-county, Kiambu County. It offers STEM, Social Sciences and Arts & Sports Science, with 9 subject combinations.

School details admission facts are for the 2026 intake

Cluster: C3Ministry of Education senior-school cluster.
Gender: Girls
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

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 Girls – Thigio scored a mean of 4.94 (C-) in KCSE 2010, close to that year’s national average of 5.15, down from 5.21 in 2009.

	2010	2009	2008	2007	2006
Mean	4.935	5.213	5.348	5.194	5.384
Grade	C-	C-	C-	C-	C-
Candidates	77	89	69	72	73

KCSE results

Pathways and subject combinations checked 15 October 2026

STEM6 combinationsPure Sciences 2 · Applied Sciences 3 · Technical Studies 1

Pure Sciences · 2Agriculture, Biology, ChemistryST1042

Biology, Chemistry, PhysicsST1048

Applied Sciences · 3Agriculture, Biology, Business StudiesST2044

Chemistry, Computer Studies, Home ScienceST2024

Computer Studies, Home Science, PhysicsST2031

Technical Studies · 1Computer Studies, Electricity, GeographyST3006

Social Sciences2 combinationsHumanities & Business Studies 2

Humanities & Business Studies · 2Business Studies, French, GeographySS2068

Business Studies, Geography, History & CitizenshipSS2025

Arts & Sports Science1 combinationSports 1

Sports · 1General Science, Sports & Recreation, Theatre & FilmAS2038

Subjects in these combinations · 14

Agriculture, Biology, Business Studies, Chemistry, Computer Studies, Electricity, French, General Science, Geography, History & Citizenship, Home Science, Physics, Sports & Recreation, Theatre & Film

Senior schools in Kiambu County offering STEM · Social Sciences · Arts & Sports Science

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

Codes and registration

KNEC code: 11246103
UIC: SCDE
School code: G2010058
Level: Senior school
Sponsor: Religious Organisation
Student needs: Ordinary
Postal address: 477 LIMURU
2013 gender: Mixed

Older records figures from the 2013 records; counts made in 2007

Students enrolled: 349
Teaching staff: 19
Students per teacher: 18.4
Acres: 10
Acreage per enrolment: 34.9

Staff counted in 2007 ›

Role	Men	Women	Total
TSC teachers	6	10	16
PTA and board teachers	3	0	3
Non-teaching staff	16	5	21

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Data sources

The school description and 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 483 classification and codes
June 2025 senior-school register, row 2846 checked 15 October 2026
Kenya Gazette Notice No. 1449 2026 fee schedule