Ansar-Ud-Deen Girl” High School was founded on the 22nd of January, 1960 by the Ansar-Ud-Deen Society of Nigeria, a mission set up to propagate the religion of Islam, and promote the spiritual and physical wellbeing of its members. The school commenced her journey of existence at Block 1, located within the premises of Ansar-Ud-Deen Grammar School, Randle Avenue, Surulere. The total student population at the time was Sixty (60). In 1962, the school was relocated to Randle Road, Apapa, and finally in 1974 moved to her present permanent site at 71/77, Onitire Road, Itire – Surulere, Lagos State.