St. John is a result of an ambitious founder. Mr. Moameren Ao, who vowed to bring up the best school in Nagaland and North East India. Along with his wife, Temsurenla Ao they were able to set up in 1988. First as a small High school with only a few number of students and staffs. Their aim through this school is to impart sound foundation in Christianity, positive mental health development, moral and social values to make the students God fearing and fruitful citizens of our society.
The school quickly grew to accommodate many more students and staffs and also became an excellent higher secondary residential school.