The Lady Irwin School for Girls was established in 1927, under the leadership of Late Shri S. R. Das, the Law Member of the Viceroy’s Executive Council, for the purpose of making quality education available under the same roof to all the children of Central Government servants, irrespective of their status. This welcoming dream of Shri Das in the service of children was fostered and nurtured by many more a galaxy of Educationists and the school kept expanding till 1947 when it proved itself to be an integral part of the community. It absorbed more than it had on its rolls and its student strength galloped from 400 to 1400.

Originally the school was directly under the administrative control the Ministry of Education, Government of India and received grant from the Central Government. Later it was transferred to the Delhi Administration in 1949. It is a composite School housed in three separate buildings viz. Primary at Defence Colony and Middle and Secondary at Canning Road, New Delhi.