St. John’s Co-Ed School had its inception as St John’s Junior School on 16 October 2001. Mr. D. R. Innis, and Mrs. A. O. Ireland, the Co-Founder founded the school. Classes ranged from Pre-Nursery to Class II, with around two hundred students. As the school expanded, it shifted to its current premises at 558, R.K. Puram, in April 2002, where it came to be known as “St. John’s Co-Ed School”.

St John’s Co-Ed is a Non-Profit Minority and Charitable Institution governed by the Ernest Wilfred Society for Education and Charity. The school takes no grants or aid from the government. The school is affiliated with the Council for the Indian School Certificate Examinations, New Delhi (CISCE) vide registration number UP271.