O'Connor Catholic College is a co-educational high school, from Years 7 to 12, and a systemic school in the Diocese of Armidale. It began in 1975 with the amalgamation of two of Armidale's longest established schools - St Ursula's College (est. 1882) and De La Salle College (est. 1906). The School occupies the site of the former De La Salle College.