Sub-county schools in Kenya form the lowest cadre of secondary schools.
They come after national, extra county and county schools respectively.
Kenyan learners who attain low marks in the KCPE national exam are admitted to these schools.
Majority of sub-county schools are mixed.
Most of them are day schools though a few are day/boarding schools.
They are available across all the 47 counties.
Here is a list of sub-county secondary schools in Kisii County:
| SCHOOL | KNEC CODE | CATEGORY | |
| 1 | KEBABE S.D.A SECONDARY SCHOOL | 40727119 | Sub County |
| 2 | KIOBEGI SECONDARY SCHOOL | 40732111 | Sub County |
| 3 | NYABITE A.C SECONDARY SCHOOL | 40732112 | Sub County |
| 4 | ST CHARLES KABEO SECONDARY SCHOOL | 40732113 | Sub County |
| 5 | ST. JAMES GIONSARIA SECONDARY SCHOOL | 40732115 | Sub County |
| 6 | ROGONGO DEB MIXED SECONDARY SCHOOL | 40732116 | Sub County |
| 7 | NYABITE DOK SECONDARY SCHOOL | 40732117 | Sub County |
| 8 | MOSORA SDA SECONDARY SCHOOL | 40732118 | Sub County |
| 9 | ST. JOHN’S OROGARE SECONDARY SCHOOL | 40732119 | Sub County |
| 10 | ST. THOMAS TURWA SECONDARY SCHOOL | 40732121 | Sub County |
| 11 | ITUMBE DOK SECONDARY SCHOOL | 40732123 | Sub County |
| 12 | NYACHOGOCHOGO AIC SECONDARY SCHOOL | 40732124 | Sub County |
| 13 | EBIGOGO SECONDARY SCHOOL | 40732125 | Sub County |
| 14 | ST. GABRIEL RIYABO SECONDARY SCHOOL | 40732126 | Sub County |
| 15 | NYABISIA DEB MIXED SECONDARY SCHOOL | 40732130 | Sub County |
| 16 | NAIKURU P.A.G SECONDARY SCHOOL | 40732201 | Sub County |
| 17 | ISENA P.A.G SECONDARY SCHOOL | 40732202 | Sub County |
| 18 | ST PAUL’S NYACHEKI SECONDARY SCHOOL | 40732203 | Sub County |
| 19 | MOCHENGO P.A.G SECONDARY SCHOOL | 40732204 | Sub County |
| 20 | NYANGUSU MIXED SECONDARY SCHOOL | 40732205 | Sub County |
| 21 | BORANGI S.D.A SECONDARY | 40732208 | Sub County |
| 22 | NYAMAKOROBO F.A.M SECONDARY SCHOOL | 40732209 | Sub County |
| 23 | KIONDUSO P.A.G. SECONDARY SCHOOL | 40732210 | Sub County |
| 24 | GETAI SDA MIXED SECONDARY SCHOOL | 40732211 | Sub County |
| 25 | MOGONGA P.A.G SECONDARY SCHOOL | 40732212 | Sub County |
| 26 | THE SACRED HEART OF JESUS EKEONGA SECONDARY SCHOOL Sub County | 40732213 | Sub County |
| 27 | EBIOSI P.A.G MIXED SECONDARY SCHOOL | 40732214 | Sub County |
| 28 | NYAMUYA ELCK SECONDARY SCHOOL | 40732216 | Sub County |
| 29 | MAKAROR MIXED DAY SECONDARY SCHOOL | 46802012 | Sub County |
| 30 | SHALETEY MIXED DAY SECONDARY SCHOOL | 46802013 | Sub County |
| 31 | BARWAQO MIXED DAY SECONDARY SCHOOL | 46802014 | Sub County |
| 32 | FURAHA MIXED DAY SECONDARY SCHOOL | 46802104 | Sub County |
| 33 | WABERI MIXED DAY SECONDARY SCHOOL | 46802106 | Sub County |
| 34 | THE FAULU SECONDARY SCHOOL | 46802108 | Sub County |
| 35 | AHMED LIBAN SECONDARY SCHOOL | 46802109 | Sub County |
| 36 | BUTE MIXED DAY SECONDARY SCHOOL | 46807103 | Sub County |
| 37 | HADADO SECONDARY SCHOOL | 46808103 | Sub County |
| 38 | ADEMASAJIDA MIXED DAY SECONDARY SCHOOL | 46808104 | Sub County |
| 39 | LAGBOGOL SECONDARY SCHOOL | 46808106 | Sub County |
| 40 | LEHELEY SECONDARY SCHOOL | 46809101 | Sub County |
| 41 | DIIF SECONDARY SCHOOL | 46809201 | Sub County |
| 42 | ELDAS GIRLS SECONDARY SCHOOL | 46813102 | Sub County |
| 43 | TULA TULA SECONDARY SCHOOL | 46813103 | Sub County |
| 44 | BUNA GIRLS SECONDARY SCHOOL | 46819102 | Sub County |
| 45 | HABASWEIN MIXED DAY SECONDARY SCHOOL | 46820103 | Sub County |
| 46 | BIYAMATHOW MIXED DAY AND BOARDING SECONDARY SCHOOL Sub County | 46820105 | Sub County |
| 47 | INSHAALLAH HIGH SCHOOL | 46820106 | Sub County |
| 48 | ABAKORE MIXED DAY SECONDARY SCHOOL | 46820107 | Sub County |
| 49 | SABULI MIXED DAY&BOARDING SECONDARY SCHOOL | 46820108 | Sub County |
| 50 | BARWAQO BOYS DAY SECONDARY SCHOOL | 47803107 | Sub County |
| 51 | KHADIJA GIRLS DAY SECONDARY SCHOOL | 47803109 | Sub County |
| 52 | BURUBURU DAY BOYS SECONDARY SCHOOL | 47803110 | Sub County |
| 53 | KAMOR SECONDARY SCHOOL | 47803115 | Sub County |
| 54 | DUSE BOYS SECONDARY SCHOOL | 47803117 | Sub County |
| 55 | ELIMU BORA MIXED SECONDARY SCHOOL | 47803120 | Sub County |
| 56 | MANDERA DIMTU GIRLS SECONDARY SCHOOL | 47803121 | Sub County |
