St. Mary’s Senior School – Kiamworia, also listed as Kiamworia Secondary School, is a public C3 girls’ boarding senior school in Gatundu South Sub-county, Kiambu County. The school profile below reflects its 2026 classification and registration identifiers.
St. Mary’s Senior School – Kiamworia: School Profile and Codes
- County: Kiambu
- Sub-county: Gatundu South
- Ownership: Public
- 2026 senior-school cluster: C3
- Gender and accommodation: girls’ boarding
- KNEC code: 11212128
- Unique Institution Code (UIC): N9JJ
St. Mary’s Senior School – Kiamworia: Grade 10 Admissions and Subject Pathways
Admission to Grade 10 follows the Ministry of Education’s school selection and placement process. Learners should confirm the specific subject combinations available at the school, their placement outcome, reporting dates and joining requirements. The national senior-school pathways are STEM, Social Sciences and Arts and Sports Science; not every institution offers all three or every subject combination.
St. Mary’s Senior School – Kiamworia: Fees and Payment Instructions
The 2026 government parent contribution ceiling for public boarding schools depends on their approved tier and may be KSh 53,554 or KSh 40,535 a year; this school’s precise tier has not been confirmed here. Families should obtain the latest school-issued fee statement, joining instructions and verified payment details directly from the administration.
St. Mary’s Senior School – Kiamworia: Contacts and Academic Performance
For a current telephone number, email, postal address, official website and verified KCSE results, contact the school administration. Historic directory contacts and examination statistics may have changed.

Source for the 2026 classification and registration: St. Mary’s Senior School – Kiamworia school profile.

