The following are the top 10 counties according to KCSE Mean score.
1. Kirinyaga County -274
2. Elgeyo Marakwet County -271
3. Makueni County – 267
3. Nandi County -267
5. Uasin Gishu -266
5. Busia -266
7. Nairobi -265
7. Baringo -265
7. Kisumu – 265
10. Tharaka Nithi -262
10. West Pokot – 262