All Saints' Church, Jericho Ibadan has its origin in a non- denominational children's Sunday School, which started informally in 1952 in the Jericho area, The Sunday School grew from a membership of seven in 1952 to 100 in 1959, when the church started. Most members of the Sunday School at the time were expatriates. The Sunday School was initially run by the parents of some of the children, By the time the Church started in 1959, the need to have volunteer teachers and a superintendent became obvious. Thus, Mr. David Pidgeon was the first recorded Superintendent of the Sunday School. The list of Superintendents includes:
1. Mr. David Pidgeon - 1st Superintendent (1960/1961-1963/64)
2. Mr. R. D. Birse - 2nd Superintendent (1964/65-1965/66)
3. Mr. B. D. Acres - 3rd Superintendent (1967/68)
4. Mrs. Frances Ademola - 4th Superintendent and first Nigerian to hold the post (1967/68)
5. Mrs. Omotayo Morgan - 5th Superintendent (1968/69)
6. Mr. Bayo Omoyiola - 6th Superintendent (1969/70)
7. Mrs. Omotayo Mogan - 7th Superintendent (1970/71)
8. Engr. E.S.A Oluyemi - 8th Superintendent (1971/72-1982/83)
9. Mrs. F. A. Olunuga - 9th Superintendent (1983/84-1988/89)
10. Mr. M. O. Ilori - 10th Superintendent (1989/90-2003/ 04)
11. Mr. S. O. Orekha - 11th Superintendent (2004/05-2006/ 07)
12. Dr. Aderonke Akinpelu - 12th Superintendent (2007/08-till date)
The Sunday School has used different venues for its worship and classes. These include the hall of the School of Forestry, Jericho and the Church Hall. A 1968 Church record indicates that Sunday School classes were held in the building of the Free Masons, next to the Church House. For this reason, many parents withdrew their children and this virtually developed into a crisis. The Sunday School was relocated to the School of Forestry's hall as a temporary solution. Since the completion of the Church Hall, it has been the Sunday School's place of worship and teaching.
A typical Sunday service of the Sunday School begins with children's church, after which the children are divided into classes according to their ages: Beginners' class (age ≤ 5years), Friends of God's class (age 5-7years), Adventurers' class (age 7-10 years) and Pilots' class (age 10+ - 12 years). During the tenure of Mrs. F.A. Olunuga as superintendent, the Sunday School started holding a special service on Children's Day and the Juvenile Harvest celebration in the main church. During such services, the children lead many aspects of worship and minister to the congregation in songs and drama. In December every year, the Sunday School presents nativity programmes. In 1993, during the tenure of Mr. Ilori as Superintendent, the Sunday School started holding an annual children's rally, initially called a "Retreat". In 2005, the rally was renamed "Fun Day with Jesus".
In 2000, the Teenage Ministry evolved from the Sunday School consequent to a proposal by one of the Sunday School teachers Dr. (Mrs.) Fadeke Adewunmi to the Annual General Meeting of the Church and later to the Church Council. The Ministry was initially run as part of the Sunday School. In 2004, it became an independent unit of the Church. The Ministry uses the Teenage Hall which was completed in 2003, for its worship.
Currently, the population of children in the Sunday School averages about 150 and this is contributed to by the boarders of All Saints' College and the Beechford International High School (a school belonging to a member of the congregation).
There are twelve senior teachers, namely Dr. Aderonke Akinpelu (Superintendent), Mr. O.A. Akinpelu, Mrs. Temitope Talabi, Dr. Obafunke Denloye, Dr. Modupe Oyetunde, Mrs. Olusola Aina, Mrs. Doyin Bolu, Mrs. Tinuoye Atiba, Mrs. Adenike Senuga, Dr. Folasade Ajasin, Miss Ayokunmi Oyeleye and Miss Salewa Denton.
Junior teachers include Mr. Emeka Ogbogu, Miss Ranti Keyede, Miss Labo Falomo, Miss Chineze Ogbogu and Mr. Samson Nwajei. The junior teachers are essentially products of the Sunday School and Teenage Ministry, and invariably are undergraduates. There are a few cases of children in the Sunday School whose father or mother were themselves once children of this same Sunday School.