Koisolik Senior School (formerly called Koisolik Secondary School) is a C4 Public Mixed Senior School that is physically located in Nandi County, Nandi North Sub County  in the Rift Valley Region of the  Republic of Kenya. This article provides all the details about Koisolik Senior School, including: the school’s cluster, level, UIC Code, Knec Code, Admissions and location.

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

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

School’s Old Name	Koisolik Secondary School
School’s New Name	Koisolik Senior School
Cluster	C4
Gender	Mixed
Accomodation Type	Day
Region	Rift Valley
County	Nandi
Sub County	Nandi North
UIC Code	VB5S
KNEC Code	29540117
Type of School	Public
Regular or SNE	Regular
Disability Type	None

Koisolik 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 Koisolik 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.

Koisolik Senior School’s Background and History.

Koisolik Senior School, historically known as Koisolik Secondary School, has played a very key role in the Kenyan Education Sector and more particularly in Nandi county; where it is domiciled.

The school has grown over the years and is now a fully recognized  C4 Public Senior School. In January 2026, Koisolik Senior School admitted the first grade 10 learners under the CBE Curriculum.

Location of Koisolik Senior School.

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

Frequently Asked Questions About Koisolik Senior School.

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

The UIC Code for Koisolik Senior School is VB5S.

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

Koisolik Senior School is a Day Senior School.

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

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

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

The Official Knec Code for Koisolik Senior School is 29540117.

5. In Which County is Koisolik Senior School Found?

Koisolik Senior School is located in Nandi County.

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

Koisolik Senior School is a Mixed Senior School.

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

Koisolik Senior School was formerly called Koisolik Secondary School.

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

Koisolik Senior School is now classified as a C4 Senior School.

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

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

10. Where is Koisolik Senior School Located?

Koisolik Senior School is found in Nandi North Subcounty of Nandi County; in the Rift Valley Region of the Republic of Kenya.

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

Koisolik 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.