In the 2020 Kenya Certificate of Secondary Education (KCSE) Examinations, Alliance High School topped with the highest number of straight A’s (A plains). The school had a total of 77 candidates with grade A (plain). Kapsabet Boys came in second with 65 while, Alliance Girls had 55.
The list of KCSE 2020 top performers was dominated by National Schools.
KCSE 2020 TOP SCHOOLS WITH STRAIGHT A’s
| Rank | Name of School | County | Number of A’s |
| 1 | Alliance High School | Kiambu | 77 |
| 2 | Kapsabet High School | Nandi | 65 |
| 3 | Alliance Girls High School | Kiambu | 55 |
| 4 | Kenya High School | Nairobi | 53 |
| 5 | Maranda High School | Siaya | 48 |
| 6 | Mang’u High School | Kiambu | 42 |
| 7 | Murang’a High School | Murang’a | 30 |
| 8 | MaryHill Girls | Kiambu | 25 |
| 9 | Light Academy | Nairobi | 25 |
| 10 | Maseno School | Kisumu | 24 |
| 11 | Nairobi School | Nairobi | 22 |
| 12 | Asumbi Girls High School | Homa Bay | 19 |
| 13 | Pangani Girls High School | Nairobi | 17 |
| 14 | Agoro Sare High School | Homa Bay | 16 |
| 15 | Kagumo High School | Nyeri | 16 |
| 16 | Moi Kabarak High School | Nakuru | 15 |
| 17 | Kamusinga High School | Bungoma | 13 |
| 18 | Kapsabet Girls | Nandi | 13 |
| 19 | Friends School Kamusinga | Bungoma | 13 |
| 20 | Kisii High School | Kisii | 12 |
| 21 | Mbita High School | Homa Bay | 10 |
| 22 | Lugulu Girls | Bungoma | 8 |
| 23 | Lenana School | Nairobi | 7 |
| 24 | Moi Tea Girls | Kericho | 6 |
| 25 | Bunyore Girls High School | Vihiga | 6 |
| 26 | Kabianga High School | Kericho | 6 |
| 27 | Homa Bay High School | Homa Bay | 5 |
| 28 | Butere Girls High School | Kakamega | 5 |
| 29 | Chavakali High School | Vihiga | 4 |
| 30 | Ringa Boys High | Homa Bay | 2 |
| 31 | St Joseph’s School Rapogi | Migori | 2 |
Get results for all schools here; KCSE results portal