Extra County Schools in Kenya form the second tier of secondary schools; after National schools. They were formerly referred to as Provincial schools. These schools are distributed all over the Country with each county having its share. The schools admit students from all over the country. These schools are in 3 Categories i.e category 1 (C1), Category 2 (C2) and Category 3 (C3). The Schools are either of Mixed or single sex type.

Here are the Extra County Schools in Trans Nzoia County:

School  Code	School Name	Category	Type	Cluster
23503108	BOMA BOYS’ HIGH SCHOOL	Extra County	Boys	C1
23503110	KITALE SCHOOL-SECONDARY	Extra County	Girls	C1
23503111	ST JOSEPH’S GIRLS’ HIGH SCHOOL KITALE	Extra County	Girls	C1
23528101	ST MARK’S HIGH SCHOOL – CHERANGANI	Extra County	Boys	C1
23528105	IMMACULATE CONCEPTION  BOYS HIGH SCHOOL – MUKUYU	Extra County	Boys	C3
23528106	A.I.C MOI BOYS HIGH SCHOOL – KAPLAMAI	Extra County	Boys	C3
23528108	FRIENDS BWAKE BOYS SCHOOL	Extra County	Boys	C2
23528116	ST. MARK’S GIRLS HIGH SCHOOL	Extra County	Girls	C1
23528124	FRIENDS BWAKE GIRLS SECONDARY SCHOOL	Extra County	Girls	C3
23528204	KIPKEIKEI HIGH SCHOOL	Extra County	Boys	C3
23529103	GOSETA BOYS HIGH SCHOOL	Extra County	Boys	C1
23529118	KWANZA GIRLS HIGH SCHOOL	Extra County	Girls	C2
23529132	ST. MONICA’S GIRLS HIGH SCHOOL, KITALE	Extra County	Girls	C1
23572102	ST.PAULS KITUM HIGH SCHOOL	Extra County	Boys	C2
23574101	ST.ANTHONY’S BOYS’ HIGH SCHOOL – KITALE	Extra County	Boys	C1
23574140	KABUYEFWE FRIENDS GIRLS SECONDARY SCHOOL	Extra County	Girls	C1
23574143	KABUYEFWE FRIENDS SECONDARY SCHOOL	Extra County	Boys	C1

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