The history of organised Sunday School cannot be detached from Pastor E. H. L. Olusheye, who returned from overseas in 1977 with Pastor S. O. Akinsulure to harmonise existing individual efforts into one national programme. The Department was fully launched in 1977, and the first lecture pamphlet was written that same January.
At C.A.C. Oke-Igbala Ketu, the Department has been active from inception — today led by Elder S. A. Adegbesan as Supervisor, running 13 Yoruba and 5 English classes every Sunday, alongside training, Christian Education, and the Children’s Seminary programme.