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

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

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

School’s Old Name	Ruiru Secondary School
School’s New Name	Ruiru Senior School
Cluster	C4
Gender	Boys
Accomodation Type	Day
Region	Central
County	Kiambu
Sub County	Ruiru
UIC Code	G26F
KNEC Code	11235101
Type of School	Public
Regular or SNE	Regular
Disability Type	None

Ruiru 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 Ruiru 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.

Ruiru Senior School’s Background and History.

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

Location of Ruiru Senior School.

Ruiru Senior School’s exact physical location is in Kiambu County, Ruiru in the Central Region of the  Republic of Kenya.

What to know about Central Region’s Senior Schools.

Central is the home of some of the best and highly competitive Senior Schools in Kenya. Ruiru Senior School, just like other Senior schools in the region, favourably compete in co-curricular activities, academics and Infrastructural development. Before joining  Ruiru Senior School, confirm the pathways it offers.

Frequently Asked Questions About Ruiru Senior School.

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

The UIC Code for Ruiru Senior School is G26F.

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

Ruiru Senior School is a Day Senior School.

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

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

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

The Official Knec Code for Ruiru Senior School is 11235101.

5. In Which County is Ruiru Senior School Found?

Ruiru Senior School is located in Kiambu County.

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

Ruiru Senior School is a Boys Senior School.

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

Ruiru Senior School was formerly called Ruiru Secondary School.

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

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

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

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

10. Where is Ruiru Senior School Located?

Ruiru Senior School is found in Ruiru Subcounty of Kiambu County; in the Central Region of the Republic of Kenya.

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

Ruiru 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.