The school was founded in 1908 by the Abeokuta District Church Council (Anglicans).

Headed by a national body known as the Central Executive Committee with its headquarters in Abeokuta, the association operates through branches all over Nigeria and the world.

[3][4] A team of three students from Abeokuta Grammar School in Ogun State has emerged the national winner in the Social and Innovation Category at the 2019 National Pitch Event for the Diamond Challenge.

It was held at the Youth Development Center of the Olusegun Obasanjo Presidential Library.

[5] Official Website "History of Abekouta Grammar School, Old Students Association".