 The College is the oldest Catholic boys' boarding school in Australia, and caters for approximately 600 students from Year 7 to Year 12, including approximately 120 boarders.The early history of the College is intertwined with that of the short-lived St Charles' Seminary; both institutions shared the original towered section of building facing Brilliant Street until the latter closed in the late 1800s.St Stanislaus' College is affiliated with the Association of Heads of Independent Schools of Australia (AHISA), and is a member of the Association of Independent Schools of New South Wales (AISNSW).