Complex sentence: Ambassador Kalomoh attended primary school from 1967 to 1969 at St Mary's High School and Form 1 in 1970 after which he together with other students were expelled following our involvement in a dispute within the Church leadership.
Split into simpler sentences: Ambassador Kalomoh attended primary school from 1967 to 1969 at St Mary's and High School in 1970. He, together with other students were expelled following involvement in a dispute within the Church leadership.