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

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

Siera Girls Senior School School’s Basic Data and National Information.

School’s Old Name	Siera Girls Secondary School
School’s New Name	Siera Girls Senior School
Cluster	C4
Gender	Girls
Accomodation Type	Day
Region	Western
County	Busia
Sub County	Nambale
UIC Code	64SW
KNEC Code	35629128
Type of School	Public
Regular or SNE	Regular
Disability Type	None

Siera Girls 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 Siera Girls 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.

Siera Girls Senior School’s Background and History.

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

Location of Siera Girls Senior School.

Siera Girls Senior School’s exact physical location is in Busia County, Nambale in the Western Region of the  Republic of Kenya.

What to know about Western Region’s Senior Schools.

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

Frequently Asked Questions About Siera Girls Senior School.

1. What is the UIC Code for Siera Girls Senior School?

The UIC Code for Siera Girls Senior School is 64SW.

2. Is Siera Girls Senior School a Boarding or Day School?

Siera Girls Senior School is a Day Senior School.

3. What CBE Grades are taught at Siera Girls Senior School?

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

4. What is the Knec Code for Siera Girls Senior School?

The Official Knec Code for Siera Girls Senior School is 35629128.

5. In Which County is Siera Girls Senior School Found?

Siera Girls Senior School is located in Busia County.

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

Siera Girls Senior School is a Girls Senior School.

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

Siera Girls Senior School was formerly called Siera Girls Secondary School.

8. What is Siera Girls Senior School’s New Cluster?

Siera Girls Senior School is now classified as a C4 Senior School.

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

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

10. Where is Siera Girls Senior School Located?

Siera Girls Senior School is found in Nambale Subcounty of Busia County; in the Western Region of the Republic of Kenya.

11. Is a Siera Girls Senior School Private or Public School?

Siera Girls 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.