KCSE 2022-2023 Ranking of Best 100 Schools in Kisii County (Ultimate List)
| Position Nationally | Name of School | Region | County | Mean Score | Mean Grade |
| 19 | Kisumu Day Secondary | NYANZA | kisumu | 10.074 | B+{plus} |
| 31 | MASENO SCHOOL | NYANZA | Kisumu | 9.663 | B+{plus} |
| 52 | Sigoti Complex | NYANZA | Kisumu | 9.27 | B{plain} |
| 71 | ST PETERS ABWAO SECONDARY | NYANZA | kisumu | 9.1 | B{plain} |
| 98 | Chemelil Sugar Academy | NYANZA | Kisumu | 8.69 | B{plain} |
| 112 | Kisumu Girls | NYANZA | Kisumu | 8.47 | B-{minus) |
| 122 | Koru Girls | NYANZA | kisumu | 8.3465 | B-{minus) |
| 125 | Bishop Abiero | NYANZA | Kisumu | 8.3 | B-{minus) |
| 163 | St Bernabas Kombewa | NYANZA | Kisumu | 7.93 | B-{minus) |
| 173 | Onjiko Boys | NYANZA | Kisumu | 7.82 | B-{minus) |
| 174 | NYANG’ORI HIGH | NYANZA | kisumu | 7.8143 | B-{minus) |
| 177 | Ridore Mixed | NYANZA | Kisumu | 7.8 | B-{minus) |
| 179 | SINYOLO GIRLS | NYANZA | kisumu | 7.7753 | B-{minus) |
| 183 | Magwar Model | NYANZA | Kisumu | 7.76 | B-{minus) |
| 194 | ACK Rae Girls | NYANZA | kisumu | 7.5 | B-{minus) |
| 205 | RAE GIRLS | NYANZA | KISUMU | 7.4 | C+{plus} |
| 221 | NYABONDO BOYS | NYANZA | Kisumu | 7.26 | C+{plus} |
| 224 | AHERO GIRLS | NYANZA | Kisumu | 7.2 | C+{plus} |
| 256 | MAGUNGA SECONDARY | NYANZA | KISUMU | 6.73 | C+{plus} |
| 258 | Nyakach Girls | NYANZA | KISUMU | 6.5574 | C+{plus} |
