The Catholic Institute of Sydney seeks to be a community of faith and learning, a community whose members work together through scholarship and service to bring the Gospel into dialogue with Australian Culture. In order to realise its mission, the Catholic Institute of Sydney promotes study in theology, philosophy, and the humanities; it draws upon and develops the intellectual and spiritual heritage of the Catholic Church and the wider Christian tradition; it is enriched by its participation in the Sydney College of Divinity; and it values and learns from other religious traditions. Catholic Institute of Sydney is committed to the pursuit of excellence, intellectual integrity, and academic freedom. In all its relationships, it is dedicated to co-responsibility, justice and equity.

With the support and encouragement of all its members, the Catholic Institute of Sydney (CIS) seeks to develop a spirit of friendship and welcome. All are encouraged to share in the various aspects of CIS life, such as daily Mass, social functions, and the management of day-to-day activities. The classroom is a place of teaching and learning where views may be freely expressed and experiences shared within the limitation of the aims of the course. The relationship between students and teachers extends beyond the classroom. Students are welcome to consult teachers outside the classroom when particular needs or difficulties arise. From time to time during the year CIS offers public lectures on contemporary issues of interest to the Christian community and Australian society.