Teachers and administrators, whether in universities or schools, have the duty and privilege to ensure that students receive instruction in Catholic doctrine and practice. This requires that public witness to the way of Christ, as found in the Gospel and upheld by the Church's Magisterium, shapes all aspects of an institution's life, both inside and outside the classroom. Divergence from this vision weakens Catholic identity and, far from advancing freedom, inevitably leads to confusion, whether moral, intellectual or spiritual.

(Benedict XVI, Address to Catholic Educators, Catholic University of America, 17 April 2008)