Mosoriot Teachers College was established in 1959 at the current Kapsabet Girls High School Compound. The founder of Mosoriot Teachers College was Africa Inland Mission (AIM), currently Africa Inland Church (AIC). Mosoriot Teachers College was brought under the protestant education oversight, Christian Churches Education Association (CCEA) from 1964. CCEA policy was ecumenical regulation of education in sister institutions, provision and custody of assets of protestant owned schools and colleges.

The college was re-located to its current site in 1960. The site had been reserved for grass for cattle during dry spells for the community by the Senior Chief Joel Kiptenai Malel in 1959. He was the Senior Chief of Kosirai Location. He had transferred his office to the Current site that houses the Catholic Church, St. Francis Primary School, and, St. Francis Girls Secondary School - Cheptarit.

The college was named after the then colonial District Commissioner (DC) of the Nandi by the name Hunter. The Hunters Tree College emanates from the zeal and passion of the DC in planting blue gum trees in the current site on the College and hence the name ‘Kap-Hunters’.

The founder and Principal of Mosoriot Teachers’ College was called J. Rogers (1960-1961). The name of the college was changed from Hunters Tree College to Mosoriot Teachers College probably to Africanize and indigenize it.‘Mosoriot’ among the Nandi community is the name of the species of tree plant of the family of climbers that grows near river banks. The climber was used by the community in fixing the handles of the traditional hoes.

The College Board of Governors then allocated the land on which Malel Primary School was constructed. The Chief of Mutwot location at that time, Mr. David Kemboi, spearheaded the establishment of Malel Primary School together with the then Principal (Mr. Gilbert Oriya).Malel Mosoriot Teachers’ College Primary School was started in 1987 as Cheptarit East Primary School. The school was intended to serve the college staff since other good schools were far off in Eldoret.

The college sat on a 92-acre piece of land until 2013 when the process of establishing of a University Campus, Koitalel Samoei University College (KSUC) was mooted. The college is now sitting on 41 acres of land: 10 acres of Lagoon land where the college sewage plant stands; and 31 acres of land to accommodate students’ dormitories, staff houses, college gate, Tuition, and administration block, library, all fields/playgrounds, and Malel Mosoriot Teachers’ College Primary School.