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

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

St. William Gendro Senior School School’s Basic Data and National Information.

School’s Old Name	St. William Gendro Secondary School
School’s New Name	St. William Gendro Senior School
Cluster	C4
Gender	Mixed
Accomodation Type	Day
Region	Nyanza
County	Siaya
Sub County	Siaya
UIC Code	8PDX
KNEC Code	42705114
Type of School	Public
Regular or SNE	Regular
Disability Type	None

St. William Gendro 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 St. William Gendro 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.

St. William Gendro Senior School’s Background and History.

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

Location of St. William Gendro Senior School.

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

Frequently Asked Questions About St. William Gendro Senior School.

1. What is the UIC Code for St. William Gendro Senior School?

The UIC Code for St. William Gendro Senior School is 8PDX.

2. Is St. William Gendro Senior School a Boarding or Day School?

St. William Gendro Senior School is a Day Senior School.

3. What CBE Grades are taught at St. William Gendro Senior School?

St. William Gendro Senior School offers CBE Senior Schools Grades at Grade 10, 11 and 12.

4. What is the Knec Code for St. William Gendro Senior School?

The Official Knec Code for St. William Gendro Senior School is 42705114.

5. In Which County is St. William Gendro Senior School Found?

St. William Gendro Senior School is located in Siaya County.

6. Does St. William Gendro Senior School admit Boys, Girls or Both?

St. William Gendro Senior School is a Mixed Senior School.

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

St. William Gendro Senior School was formerly called St. William Gendro Secondary School.

8. What is St. William Gendro Senior School’s New Cluster?

St. William Gendro Senior School is now classified as a C4 Senior School.

9. Is there SNE Support for Learners at St. William Gendro Senior School?

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

10. Where is St. William Gendro Senior School Located?

St. William Gendro Senior School is found in Siaya Subcounty of Siaya County; in the Nyanza Region of the Republic of Kenya.

11. Is a St. William Gendro Senior School Private or Public School?

St. William Gendro 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.