Isoyin Grammar School was founded in 1956 in the small town 8 kilometers from Ijebu Ode at Grammar School Road, Isonyin. The host community, Isoyin, is known for its passion for education, and its members have been instrumental in the establishment of this public secondary school.
Some of the school’s facilities have been attended to in recent times, with single former student, in some cases, financing the renovation of those rooms that causes them nostalgia.