The school was started in July 1961 on the large property that originally belonged to the last Nawab of Kunjpura, Ibrahim Ali Khan, who had built it in the year 1900 to house the marriage party of his daughter.

The property passed into the hands of the Defence Ministry as the nawab migrated to Pakistan after the independence of India and died in Lahore in 1952.

Sainik School, Kunjpura came into being in July 1961, at the behest of V. K. Krishna Menon, the then Defence Minister of India, who took personal interest in its inception.

In addition to the main building, the school has an NDA block (which serves as the new academic block), cadets Mess, the Manekshaw Auditorium, the Simeon Squash Court, gymnasium, riding school, swimming pool, athletics and sports fields, infirmary and residential areas for the staff and the boys.

The Main Building houses the Administrative block, Office of the Principal, conference hall, library and sub-junior classes.