Holy Trinity Church School (HTCS) was established in April 1994 by the Diocese of Agra, with the mission of providing holistic, value-based education. The foundation stone was laid on 5th March 1994 by the Late Rt. Rev. Morris Andrews, Hon'ble Bishop of the Agra Diocese, in the presence of eminent dignitaries.

From its humble beginnings, the school's first academic session commenced on 24th April 1995 with 120 students, 2 teachers, and 2 support staff, all sharing a modest set of 10 classrooms and an office. Under the dedicated leadership and endless efforts of the founder principal, Mrs. Asha Daniel, HTCS rapidly evolved, earning a distinguished reputation in Ghaziabad for its commitment to academic excellence and character formation.