St Mary's Anglican Girls' School is an independent, Anglican, day and boarding school for girls, located in Karrinyup, a suburb north of Perth. Established in 1921 at West Perth, St Mary's has a non-selective enrolment policy and currently caters for more than 1470 students from Kindergarten to Year 12, including 171 boarders from Years 6 to 12. St Mary's brother school is Hale School, located in Wembley Downs.