The Year 7 and 8 Campus is at Regents Park, whilst the Year 9 to Year 12 Campus is located at Auburn. Strong relationships with feeder primary schools ensure that the continuum from K–12 becomes a reality and that the transition from primary to secondary school is handled with educational and social sensitivity and responsibility.

The dual campus organisation also allows for the older students in Years 9–12 to be educated in an environment and learning climate appropriate to their increasing maturity. Trinity Catholic College has extensive, well-established facilities within its two campuses. These include: