Sosio Senior School (formerly called Sosio Secondary School) is a C3 Public Mixed Senior School that is physically located in Narok County, Trans Mara West Sub County  in the Rift Valley Region of the  Republic of Kenya. This article provides all the details about Sosio Senior School, including: the school’s cluster, level, UIC Code, Knec Code, Admissions and location.

This Boarding Senior School forms part of the Narok Education Network and has fully transitioned to a Senior School that offers Competency Based Education (CBE) Curriculum to Grade 10, 11 and 12 Learners.

Sosio Senior School School’s Basic Data and National Information.

School’s Old Name	Sosio Secondary School
School’s New Name	Sosio Senior School
Cluster	C3
Gender	Mixed
Accomodation Type	Boarding
Region	Rift Valley
County	Narok
Sub County	Trans Mara West
UIC Code	NADU
KNEC Code	32519102
Type of School	Public
Regular or SNE	Regular
Disability Type	None

Sosio 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 Sosio Senior School at grade 10 specialize in any one of the following three main CBE pathways:

1. 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. 
2. 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. 
3. 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.

Sosio Senior School’s Background and History.

Sosio Senior School, historically known as Sosio Secondary School, has played a very key role in the Kenyan Education Sector and more particularly in Narok 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, Sosio Senior School admitted the first grade 10 learners under the CBE Curriculum.

Location of Sosio Senior School.

Sosio Senior School’s exact physical location is in Narok County, Trans Mara West 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. Sosio Senior School, just like other Senior schools in the region, favourably compete in co-curricular activities, academics and Infrastructural development. Before joining  Sosio Senior School, confirm the pathways it offers.

Frequently Asked Questions About Sosio Senior School.

1. What is the UIC Code for Sosio Senior School?

The UIC Code for Sosio Senior School is NADU.

2. Is Sosio Senior School a Boarding or Day School?

Sosio Senior School is a Boarding Senior School.

3. What CBE Grades are taught at Sosio Senior School?

Sosio Senior School offers CBE Senior Schools Grades at Grade 10, 11 and 12.

4. What is the Knec Code for Sosio Senior School?

The Official Knec Code for Sosio Senior School is 32519102.

5. In Which County is Sosio Senior School Found?

Sosio Senior School is located in Narok County.

6. Does Sosio Senior School admit Boys, Girls or Both?

Sosio Senior School is a Mixed Senior School.

7. What was Sosio Senior School’s Fomer Name under the 8-4-4 Education System?

Sosio Senior School was formerly called Sosio Secondary School.

8. What is Sosio Senior School’s New Cluster?

Sosio Senior School is now classified as a C3 Senior School.

9. Is there SNE Support for Learners at Sosio Senior School?

Sosio Senior School offers support for Regular learners. The school’s Disability Type is None.

10. Where is Sosio Senior School Located?

Sosio Senior School is found in Trans Mara West Subcounty of Narok County; in the Rift Valley Region of the Republic of Kenya.

11. Is a Sosio Senior School Private or Public School?

Sosio 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.