Register your contact details with the Old Boys' Union. Family of Old Boys and current and former staff of Parramatta Marist are also welcome to register. It's free and it helps us keep you informed about The Parramatta Marist Old Boys Union and Parramatta Marist High and their events and projects by providing us with your contact details and preferences. You can keep these details up to date by logging in and updating the contact details in your profile.