Gross Attendance Ratio, Secondary (number)
| 2006 |
| Nairobi | 167,765 |
| Bungoma | 140,234 |
| Nakuru | 140,104 |
| Machakos | 130,262 |
| Makueni | 127,471 |
| Trans Nzoia | 107,543 |
| Kiambu | 104,121 |
| Uasin Gishu | 95,415 |
| Nandi | 88,513 |
| Nyeri | 84,908 |
| Mombasa | 82,971 |
| Kwale | 76,337 |
| Kitui | 73,058 |
| Vihiga | 70,603 |
| Kisumu | 70,399 |
| Nyamira | 66,975 |
| Siaya | 63,126 |
| Kakamega | 63,035 |
| Kilifi | 61,112 |
| Busia | 59,008 |
| Migori | 56,917 |
| Nyandarua | 56,516 |
| Bomet | 50,609 |
| Kisii | 48,646 |
| Baringo | 48,381 |
| Turkana | 48,004 |
| Garissa | 47,757 |
| West Pokot | 44,603 |
| Narok | 44,391 |
| Muranga | 42,121 |
| Taita Taveta | 39,670 |
| Kirinyaga | 39,235 |
| Laikipia | 38,600 |
| Wajir | 36,872 |
| Kajiado | 34,090 |
| Mandera | 32,241 |
| Embu | 31,070 |
| Homa Bay | 28,178 |
| Tana River | 27,870 |
| Kericho | 27,253 |
| Samburu | 18,390 |
| Marsabit | 15,901 |
| Isiolo | 11,067 |
| Lamu | 9,114 |