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

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

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

School’s Old Name	Riosiago Secondary School
School’s New Name	Riosiago Senior School
Cluster	C4
Gender	Mixed
Accomodation Type	Day
Region	Nyanza
County	Nyamira
Sub County	North Masaba
UIC Code	JWM8
KNEC Code	43715126
Type of School	Public
Regular or SNE	Regular
Disability Type	None

Riosiago 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 Riosiago 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.

Riosiago Senior School’s Background and History.

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

Location of Riosiago Senior School.

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

Frequently Asked Questions About Riosiago Senior School.

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

The UIC Code for Riosiago Senior School is JWM8.

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

Riosiago Senior School is a Day Senior School.

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

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

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

The Official Knec Code for Riosiago Senior School is 43715126.

5. In Which County is Riosiago Senior School Found?

Riosiago Senior School is located in Nyamira County.

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

Riosiago Senior School is a Mixed Senior School.

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

Riosiago Senior School was formerly called Riosiago Secondary School.

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

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

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

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

10. Where is Riosiago Senior School Located?

Riosiago Senior School is found in North Masaba Subcounty of Nyamira County; in the Nyanza Region of the Republic of Kenya.

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

Riosiago 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.