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

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

Osiri Mixed Senior School School’s Basic Data and National Information.

School’s Old Name	Osiri Mixed Secondary School
School’s New Name	Osiri Mixed Senior School
Cluster	C4
Gender	Mixed
Accomodation Type	Day
Region	Nyanza
County	Migori
Sub County	Nyatike North
UIC Code	UCPN
KNEC Code	44729138
Type of School	Public
Regular or SNE	Regular
Disability Type	None

Osiri Mixed 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 Osiri Mixed 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.

Osiri Mixed Senior School’s Background and History.

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

Location of Osiri Mixed Senior School.

Osiri Mixed Senior School’s exact physical location is in Migori County, Nyatike North in the Nyanza Region of the  Republic of Kenya.

What to know about Nyanza Region’s Senior Schools.

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

Frequently Asked Questions About Osiri Mixed Senior School.

1. What is the UIC Code for Osiri Mixed Senior School?

The UIC Code for Osiri Mixed Senior School is UCPN.

2. Is Osiri Mixed Senior School a Boarding or Day School?

Osiri Mixed Senior School is a Day Senior School.

3. What CBE Grades are taught at Osiri Mixed Senior School?

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

4. What is the Knec Code for Osiri Mixed Senior School?

The Official Knec Code for Osiri Mixed Senior School is 44729138.

5. In Which County is Osiri Mixed Senior School Found?

Osiri Mixed Senior School is located in Migori County.

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

Osiri Mixed Senior School is a Mixed Senior School.

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

Osiri Mixed Senior School was formerly called Osiri Mixed Secondary School.

8. What is Osiri Mixed Senior School’s New Cluster?

Osiri Mixed Senior School is now classified as a C4 Senior School.

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

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

10. Where is Osiri Mixed Senior School Located?

Osiri Mixed Senior School is found in Nyatike North Subcounty of Migori County; in the Nyanza Region of the Republic of Kenya.

11. Is a Osiri Mixed Senior School Private or Public School?

Osiri Mixed 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.