St. Mary’s Girls – Thigio | C3 Girls Boarding | Ndeiya, Kiambu

Senior-school information — 2026 intake

Senior-school cluster: C3
County: KIAMBU
Administrative subcounty: NDEIYA
KNEC code: 11246103
UIC: SCDE
Gender: Girls
Day / boarding: Boarding
Ownership: Public

2026 public boarding-school parent fee ceiling: KSh 53,554 or KSh 40,535, depending on the school's previously approved tier. This school's tier is not listed here.

Fee source: Kenya Gazette Notice No. 1449, effective 5 January 2026. For selection and placement updates, use the government portal.

Cluster and identifiers: December 2025 senior-school list, row 483. This list is hosted by Education News and attributed to the Ministry of Education.

Other dated register details: Teachers Arena (Ministry register mirror), row 2846. Published 2025-06-01; captured 2026-09-10.

The dated register does not confirm current vacancies, school-specific fees, boarding capacity or support services.

The earlier directory record and historical information are retained below.

Earlier directory summary

St Mary's Thigio Secondary is in Kiambu County (Limuru Constituency).

St Mary's Thigio Secondary is a mixed boarding secondary school.

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Earlier directory details

Legacy directory code: G2010058

Address: 477 Limuru

Level: Secondary School

Day/Boarding: Boarding

Gender: Mixed

Ownership: Public

Sponsor: Religious Organisation

Student Needs: Ordinary

Facts

Acreage: 10

Acreage per enrolment: 34.9

Pupil Teacher Ratio: 18.4

Total Enrolment: 349

Total Teaching staff: 19

Location

County: Kiambu

Constituency: Limuru

Province: Central

District: Kiambu

Division: Limuru

Location: Ndeiya

Sub Location: Thigio

Staff

TSC Male Teachers: 6

TSC Female Teachers: 10

PTA Board of Governors Male Teacher: 3

PTA Board of Governors Female Teacher: 0

Non Teaching Staff Male: 16

Non Teaching Staff Female: 5

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Pathways and subject combinations checked 15 October 2026

STEM · 6 combinations

Pure Sciences · 2

Agriculture, Biology, Chemistry (ST1042)
Biology, Chemistry, Physics (ST1048)

Applied Sciences · 3

Agriculture, Biology, Business Studies (ST2044)
Chemistry, Computer Studies, Home Science (ST2024)
Computer Studies, Home Science, Physics (ST2031)

Technical Studies · 1

Computer Studies, Electricity, Geography (ST3006)

Social Sciences · 2 combinations

Humanities & Business Studies · 2

Business Studies, French, Geography (SS2068)
Business Studies, Geography, History & Citizenship (SS2025)

Arts & Sports Science · 1 combination

Sports · 1

General Science, Sports & Recreation, Theatre & Film (AS2038)

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

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

St. Mary’s Girls – Thigio