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

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

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

School’s Old Name	Mbiini Secondary School
School’s New Name	Mbiini Senior School
Cluster	C3
Gender	Mixed
Accomodation Type	Boarding
Region	Eastern
County	Makueni
Sub County	Mukaa
UIC Code	C82J
KNEC Code	18347410
Type of School	Public
Regular or SNE	Regular
Disability Type	None

Mbiini 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 Mbiini 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.

Mbiini Senior School’s Background and History.

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

Location of Mbiini Senior School.

Mbiini Senior School’s exact physical location is in Makueni County, Mukaa in the Eastern Region of the  Republic of Kenya.

What to know about Eastern Region’s Senior Schools.

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

Frequently Asked Questions About Mbiini Senior School.

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

The UIC Code for Mbiini Senior School is C82J.

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

Mbiini Senior School is a Boarding Senior School.

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

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

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

The Official Knec Code for Mbiini Senior School is 18347410.

5. In Which County is Mbiini Senior School Found?

Mbiini Senior School is located in Makueni County.

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

Mbiini Senior School is a Mixed Senior School.

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

Mbiini Senior School was formerly called Mbiini Secondary School.

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

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

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

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

10. Where is Mbiini Senior School Located?

Mbiini Senior School is found in Mukaa Subcounty of Makueni County; in the Eastern Region of the Republic of Kenya.

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

Mbiini 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.