COUNTY SECONDARY SCHOOLS IN NAIROBI COUNTY. PHOTO COURTESY.
County secondary schools in Kenya form the third tier after national and extra-county schools respectively.
Most of Kenyan learners are absorbed by these schools.
Admission to county schools is done online by the Ministry of Education.
They are either mixed or single-sex.
Here is a list of county secondary schools in Nairobi County:
| NAME | KNEC CODE | TYPE | CATEGORY | |
| 1 | NILEROAD SECONDARY SCHOOL | 20401006 | Girls | County |
| 2 | MAKONGENI HIGH SCHOOL | 20401008 | Mixed | County |
| 3 | ST PATRICK NAIROBI MIXED SECONDARY SCHOOL | 20401021 | Mixed | County |
| 4 | EASTLEIGH HIGH SCHOOL | 20402001 | Boys | County |
| 5 | ST. TERESA’S BOYS | 20402002 | Boys | County |
| 6 | MAINA WANJIGI SECONDARY SCHOOL | 20402003 | Girls | County |
| 7 | KAMUKUNJI SECONDARY SCHOOL | 20402005 | Mixed | County |
| 8 | O.L.M SHAURI MOYO GIRLS SECONDARY SCHOOL | 20402006 | Girls | County |
| 9 | JAMHURI HIGH SCHOOL | 20403001 | Boys | County |
| 10 | DR. RIBEIRO PARKLANDS SCHOOL | 20403002 | Boys | County |
| 11 | PUMWANI SECONDARY SCHOOL | 20403003 | Boys | County |
| 12 | COUNTY GIRLS HIGH SCHOOL- NAIROBI | 20403024 | Girls | County |
| 13 | C.G.H.U. MIXED SECONDARY SCHOOL | 20403025 | Mixed | County |
| 14 | PUMWANI GIRLS SECONDARY SCHOOL | 20403026 | Girls | County |
| 15 | LANG’ATA HIGH SCHOOL | 20404001 | Boys | County |
| 16 | KAREN ‘ C ‘ SECONDARY SCHOOL | 20404022 | Mixed | County |
| 17 | LANGATA BARRACKS SECONDARY SCHOOL | 20404032 | Mixed | County |
| 18 | MUTUINI HIGH SCHOOL | 20405005 | Boys | County |
| 19 | RUTHIMITU SECONDARY SCHOOL | 20405006 | Mixed | County |
| 20 | RUTHIMITU GIRLS SECONDARY SCHOOL | 20405008 | Girls | County |
| 21 | DAGORETTI MIXED SECONDARY SCHOOL | 20405009 | Mixed | County |
| 22 | BETH MUGO HIGH SCHOOL | 20405048 | Mixed | County |
| 23 | PARKLANDS ARYA GIRLS HIGH SCHOOL | 20406001 | Girls | County |
| 24 | KANGEMI HIGH SCHOOL | 20406007 | Boys | County |
| 25 | NAIROBI MILIMANI SECONDARY SCHOOL | 20406012 | Boys | County |
| 26 | LAVINGTON MIXED SECONDARY SCHOOL | 20406018 | Mixed | County |
| 27 | OUR LADY OF FATIMA SECONDARY SCHOOL | 20407001 | Mixed | County |
| 28 | KAHAWA GARRISON SECONDARY SCHOOL | 20407002 | Mixed | County |
| 29 | RUARAKA HIGH SCHOOL | 20407003 | Mixed | County |
| 30 | KAMITI SECONDARY SCHOOL | 20407004 | Mixed | County |
| 31 | BABA DOGO SECONDARY SCHOOL | 20407005 | Mixed | County |
| 32 | KARIOBANGI NORTH GIRLS SECONDARY SCHOOL | 20407037 | Girls | County |
| 33 | NEW MWANGAZA MIXED HIGH SCHOOL | 20407045 | Mixed | County |
| 34 | GARDEN ESTATE SECONDARY | 20407059 | Mixed | County |
| 35 | MWIKI SECONDARY SCHOOL | 20407061 | Mixed | County |
| 36 | HON JOHN NJOROGE SECONDARY SCHOOL | 20407063 | Mixed | County |
| 37 | CLAY CITY SECONDARY SCHOOL | 20407065 | Mixed | County |
| 38 | THE KOMAROCK SCHOOL | 20408001 | Mixed | County |
| 39 | EMBAKASI GIRLS SECONDARY SCHOOL | 20408007 | Girls | County |
| 40 | PETER KIBUKOSYA SECONDARY SCHOOL | 20408014 | Mixed | County |
| 41 | KAYOLE SOUTH SECONDARY SCHOOL | 20408015 | Mixed | County |
| 42 | MWANGAZA SECONDARY SCHOOL | 20408020 | Mixed | County |
| 43 | EMBAKASI GARRISON SECONDARY SCHOOL | 20408029 | Mixed | County |
| 44 | UTAWALA SECONDARY SCHOOL | 20408042 | Mixed | County |
| 45 | DANDORA SECONDARY SCHOOL | 20409001 | Mixed | County |
| 46 | HON. DR. MWENJE SECONDARY SCHOOL | 20409003 | Mixed | County |
| 47 | USHIRIKA SECONDARY SCHOOL | 20409004 | Mixed | County |
| 48 | JEHOVA JIRE SECONDARY SCHOOL | 20409005 | Mixed | County |
| 49 | DRUMVALE SECONDARY SCHOOL | 20409006 | Mixed | County |
| 50 | ST. GEORGE ATHI SECONDARY SCHOOL | 20409007 | Mixed | County |
| 51 | RUAI GIRLS’ SECONDARY SCHOOL | 20409024 | Girls | County |
| 52 | RUAI BOYS SECONDARY SCHOOL | 20409025 | Boys | County |
| 53 | MIHANG’O SECONDARY SCHOOL | 20409026 | Mixed | County |
| 54 | RAILA EDUCATIONAL CENTRE | 20410003 | Mixed | County |
| 55 | SHADRACK KIMALEL MIXED SECONDARY SCHOOL | 20410004 | Mixed | County |
| 56 | OLYMPIC HIGH SCHOOL | 20410005 | Mixed | County |
| 57 | ST TERESA’S GIRLS SECONDARY SCHOOL | 20411001 | Girls | County |
| 58 | NDURURUNO SECONDARY SCHOOL | 20411004 | Mixed | County |
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