St.Mary’S Nai Boys Senior School (formerly called St.Mary’S Nai Boys Secondary School) is a C3 Public Boys Senior School that is physically located in Trans Nzoia County, Endebess Sub County in the Rift Valley Region of the Republic of Kenya. This article provides all the details about St.Mary’S Nai Boys Senior School, including: the school’s cluster, level, UIC Code, Knec Code, Admissions and location.
This Boarding Senior School forms part of the Trans Nzoia Education Network and has fully transitioned to a Senior School that offers Competency Based Education (CBE) Curriculum to Grade 10, 11 and 12 Learners.
St.Mary’S Nai Boys Senior School School’s Basic Data and National Information.
| School’s Old Name | St.Mary’S Nai Boys Secondary School |
| School’s New Name | St.Mary’S Nai Boys Senior School |
| Cluster | C3 |
| Gender | Boys |
| Accomodation Type | Boarding |
| Region | Rift Valley |
| County | Trans Nzoia |
| Sub County | Endebess |
| UIC Code | M2MC |
| KNEC Code | 23572201 |
| Type of School | Public |
| Regular or SNE | Regular |
| Disability Type | None |
St.Mary’S Nai Boys Senior School operates as a fully Senior School offering the Competency Based Education (CBE/CBC) Curriculum. Students transition to this school from Junior School after sitting for the Kenya Junior School Education Assessment (KJSEA); which is a national assessment for Grade 9 learners under the Competency-Based Curriculum (CBC/ CBE). It assesses students in nine learning areas to evaluate their readiness to transition into Senior School.
Students who join St.Mary’S Nai Boys Senior School at grade 10 specialize in any one of the following three main CBE pathways:
- STEM (Science, Technology, Engineering, and Mathematics): Focuses on innovators and problem-solvers. It branches into Pure Sciences, Applied Sciences, and Technical Studies, leading to careers like medicine, engineering, and IT.
- Social Sciences: Designed for communicators and leaders. It includes tracks in Languages, Literature, Humanities, and Business Studies, preparing students for fields like law, journalism, and education.
- Arts & Sports Science: For creative minds and athletes. It features tracks in Visual Arts, Performing Arts, Music, and various sports disciplines, fostering careers in the creative and sports industries.
St.Mary’S Nai Boys Senior School’s Background and History.
St.Mary’S Nai Boys Senior School, historically known as St.Mary’S Nai Boys Secondary School, has played a very key role in the Kenyan Education Sector and more particularly in Trans Nzoia county; where it is domiciled.
The school has grown over the years and is now a fully recognized C3 Public Senior School. In January 2026, St.Mary’S Nai Boys Senior School admitted the first grade 10 learners under the CBE Curriculum.
Location of St.Mary’S Nai Boys Senior School.
St.Mary’S Nai Boys Senior School’s exact physical location is in Trans Nzoia County, Endebess in the Rift Valley Region of the Republic of Kenya.
What to know about Rift Valley Region’s Senior Schools.
Rift Valley is the home of some of the best and highly competitive Senior Schools in Kenya. St.Mary’S Nai Boys Senior School, just like other Senior schools in the region, favourably compete in co-curricular activities, academics and Infrastructural development. Before joining St.Mary’S Nai Boys Senior School, confirm the pathways it offers.
Frequently Asked Questions About St.Mary’S Nai Boys Senior School.
1. What is the UIC Code for St.Mary’S Nai Boys Senior School?
The UIC Code for St.Mary’S Nai Boys Senior School is M2MC.
2. Is St.Mary’S Nai Boys Senior School a Boarding or Day School?
St.Mary’S Nai Boys Senior School is a Boarding Senior School.
3. What CBE Grades are taught at St.Mary’S Nai Boys Senior School?
St.Mary’S Nai Boys Senior School offers CBE Senior Schools Grades at Grade 10, 11 and 12.
4. What is the Knec Code for St.Mary’S Nai Boys Senior School?
The Official Knec Code for St.Mary’S Nai Boys Senior School is 23572201.
5. In Which County is St.Mary’S Nai Boys Senior School Found?
St.Mary’S Nai Boys Senior School is located in Trans Nzoia County.
6. Does St.Mary’S Nai Boys Senior School admit Boys, Girls or Both?
St.Mary’S Nai Boys Senior School is a Boys Senior School.
7. What was St.Mary’S Nai Boys Senior School’s Fomer Name under the 8-4-4 Education System?
St.Mary’S Nai Boys Senior School was formerly called St.Mary’S Nai Boys Secondary School.
8. What is St.Mary’S Nai Boys Senior School’s New Cluster?
St.Mary’S Nai Boys Senior School is now classified as a C3 Senior School.
9. Is there SNE Support for Learners at St.Mary’S Nai Boys Senior School?
St.Mary’S Nai Boys Senior School offers support for Regular learners. The school’s Disability Type is None.
10. Where is St.Mary’S Nai Boys Senior School Located?
St.Mary’S Nai Boys Senior School is found in Endebess Subcounty of Trans Nzoia County; in the Rift Valley Region of the Republic of Kenya.
11. Is a St.Mary’S Nai Boys Senior School Private or Public School?
St.Mary’S Nai Boys Senior School is a Public School.
12. What CBE Pathways are offered at Senior School?
Senior schools offere 3 pathways; STEM, Social Sciences and Arts and Sports.