St Stephen's School is a K-12, co-educational independent, day school of the Uniting Church located on two campuses – one in Duncraig and the other in Carramar, two suburbs of Perth, Western Australia. The school is one of Western Australia's largest independent schools. The Duncraig campus opened in 1983 for Year 3 to Year 12 and the Carramar campus in Tapping opened in 2001 for Kindergarten to Year 12. In 2011 the school opened the new Early Learning Centre (ELC) in Hepburn Heights for Kindergarten to Year 2, introducing a Pre-Kindergarten, that takes place on Wednesdays, in the mid 2010s.

Duncraig is a northern suburb of Perth, the capital city of Western Australia, and is located 16 kilometres (10 mi) north of Perth's central business district (CBD) between Marmion Avenue and Mitchell Freeway. Its local government area is the City of Joondalup.