When the government teacher training college (GITC) moved from Mbarara to Kyambogo in 1954, a small demonstration junior secondary school started in the vicinity. This demonstration school situated in a small building just below the current Nanziri hall of Kyambogo University was the humble beginning of kyambogo college school. It was quite small with few students and staff. However, it was very d
ear to the G.T.T.C for demonstration/practice lessons given by the college tutors and the student teachers, When the GTTC become national teachers college in 1965, kyambogo demonstration school continued to serve the new college as before. However, its status rose from tat of junior to a o level secondary school. Jack Carey, a speech training tutor at NTC was appointed headmaster of the new secondly school of senior one and two with a small staff of student population of 10 to 160 respectively. Most of they school stuff were spouses of the tutors at the NTC. In 1969, kyambogo demonstration school presented its first east African examinations council candidate numbering just about 70, from 1967 onwards more newly qualified Africans joined the school staff and taught along with European and Asian expatriates
In 1970, Mr. .J.P.Carey, the first head master of the secondary school left along with, most of the NTC tutors and there wives . Zebuloni Kabaza was transferred to kyambogo demonstration school and took as full head master of the school with double streams from s.1 to s.4 and with a population of 240 students taught by just under 20 teachers. At this time the school became self-accounting with Mr. Dantas taking over as bursar from Mr. Adatia, the NTC Bursar. In 1971, Mr.Kabaza retired and the school had two acting headmasters, till Mr.D.Thomas was appointed headmaster of the school in 1972.the new school plant, which was started in 1970, had been completed and was occupied. the school now had four streams from s.1 to s.4. The student’s population hit 320 and there over 20full time teachers on staff. The school now adopted the name kyambogo college school. In 1974 Mr. D.P Thomas and was his deputy Mr. T.Roberts both left for their homes in the united kingdom Mr. Gerald L. Lukwago was transferred from Kibuli S.S. and took over as the fourth substantive headmaster of the school. After ten years i.e. in march 1984, kyambogo college school was up- graded to “A”’ level status. Its student population had grown to over 700 students