The Holy Angels, U.P.School was started in 1964 by His Grace Benedict Mar Gregorios O.I.C, Archbishop of Trivandrum and the Nursery School was inaugurated in 1972 by Dr. Paul Kallukkaran F.R.C.S, a private feeder School annexed to the U.P.S.
The U.P.School was upgraded to function as an unaided English Medium High School and was formally inaugurated on the 10th of August 1976 by the Honourable Minister Mr.Baby John in the presence of His Grace Benedict Mar Gregorios, Metropolitan Archbishop of Trivandrum. It became a complete High school in 1978-1979, with all the standards from V to X permanently recognized by the Department.
The First standard of Primary section was started on the 17th of September 1979 under Government orders and std.II to IV were subsequently sanctioned in the following years so that by the academic year 1982-1983 the school became a complete High school with all the standards from I to X sanctioned and permanently recognized by the Government of Kerala.The Nursery is functioning as a Private Primary feeder school. The School became a Higher Secondary School on July 2002.