Gresham's is a Church of England foundation, but the school is open to all denominations and religions. Services are a focal point of the school's life, with a morning assembly in chapel on four mornings of the week. Pupils not in the Sixth form have an extra morning in chapel, whilst the sixth form have another tutor period (Thursday morning). All years have a tutor period on Tuesday and Thursday. The Saturday morning service is a choral practice, and Holy Communion may be taken on Sundays. There are also formal prayers in most boarding houses in the evenings.