St. Stephens Senior School-Masii: KNEC Code, Admissions & CBC Pathways
St. Stephens Senior School-Masii (formerly St. Stephens Secondary School-Masii) is a C4 Public Mixed school located in Machakos County, Mwala Sub-county, Kenya.
This Day institution is part of the Machakos education network and has transitioned to a Senior School hosting Grades 10, 11, and 12 learners under the CBC framework.

School Data & National Codes
| Official School Name | St. Stephens Senior School-Masii |
|---|---|
| KNEC Code | 12314118 |
| UIC Code | DMJM |
| S.N (Serial Number) | 4854 |
| Accommodation | Day |
| SNE Category | Regular None |
| Region / County | Eastern / Machakos |
| Sub-County | Mwala |
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St. Stephens Senior School-Masii CBC & CBE Framework
St. Stephens Senior School-Masii operates as a Senior School within the Competency Based Curriculum. Students transition from Junior School to specialize in one of the main pathways:- STEM: Science, Technology, Engineering, and Mathematics.
- Social Sciences: Humanities and Business Studies.
- Arts & Sports: Performing/Visual Arts and Physical Education.
Institutional Background
The school, known historically as St. Stephens Secondary School-Masii, has played a vital role in Machakos’s education sector. In 2024, Under the management of Nicholas N Mbithi, it grew to an enrolment of 225 students. Today, the institution maintains its status as a C4 Public senior school.Contact St. Stephens Senior School-Masii
Location: Mwala Sub-County, Machakos County, Eastern RegionPrimary Phone: Secondary Phone: 721847452Official Email: StStephenssecondaryschool@gmail.comEastern Region Senior Schools: What to Know
Eastern Region covers a large area with both urban centers and remote localities. School choice often depends on distance, accommodation, and pathway availability.- Distance & access: Confirm transport options and reporting logistics if the school is far from home.
- Pathway availability: Not every school offers all options—ask what combinations are supported.
- Student support: Check academic counselling, clubs, and any SNE provisions where relevant.
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