Mumbuni Boys High School is Extra County or C2 public boys’ secondary school located in Machakos County, near Machakos town. The school serves students from Machakos and neighbouring regions and is known for its steady academic focus and discipline.
Mumbuni Boys High School KCSE 2025 Results Summary, offer a clear picture of the school’s academic performance and subject strength distribution.
Mumbuni Boys High School KCSE Performance Analysis
In the 2025 KCSE examinations, 387 candidates were registered by Mumbuni Boys High School.
Grade Distribution Breakdown
The official results indicate the following grade distribution:
- Grade A: 0 candidates
- Grade A–: 9 candidates
- Grade B+: 11 candidates
- Grade B: 36 candidates
- Grade B–: 72 candidates
- Grade C+: 85 candidates
A total of 213 candidates, representing 55.05% of the total entry, attained Grade C+ and above, making them eligible for university admission under the KUCCPS guidelines.
Conclusion
While no candidate attained a straight Grade A, the school demonstrated solid performance in the middle to upper grades, particularly in the B– and C+ categories. The strong C+ count suggests consistent academic grounding across a significant portion of the cohort, while the presence of A– and B+ grades reflects pockets of high achievement.

Betty is a qualified teacher with a Bachelor of Education (Arts). In addition, she is a registered Certified Public Accountant. She has been teaching and offering part-time accounting services for the last 10 years. She is passionate about education, accounting, writing, and traveling.
