Complex sentence: In 1986, he registered at Mbilwi Secondary School where he founded a "science club" and a hand-written student newspaper "the weekly tri-opinion"; later being voted as the head boy of the school, and matriculating in 1988.
Split into simpler sentences: In 1986, he registered at Mbilwi Secondary School where he founded a "science club" and a hand-written student newspaper "the weekly tri-opinion". He was later voted as the head boy of the school, matriculating in 1988.