Kebirigo High School in Nyamira County managed a mean score of 7.312 (C+; plus) in the 2019 Kenya Certificate of Secondary Education, KCSE, examination; posting a positive deviation of +0.483. The school registered a total of 154 candidates. In 2018, the school had a total candidature of 105 who scored a mean of 6.829.
109 candidates scored a mean grade of C+ (plus) and above; hence, booking direct tickets to university. Candidates who scored mean grade of A- (minus) were 2 . Others scored B+ (4), B (34), B- (36) and C+ ( 33 candidates).
Here is the school’s 2019 KCSE Mean Grade Summary;
| MEAN GRADE | NUMBER OF CANDIDATES |
| A | 0 |
| A- | 2 |
| B+ | 4 |
| B | 34 |
| B- | 36 |
| C+ | 33 |
| C | 19 |
| C- | 21 |
| D+ | 5 |
| D | 0 |
| D- | 0 |
| E | 0 |
| x | 0 |
| TOTAL | 154 |