St. Mary School was built in 1956. It was one of the first Roman Catholic Schools to open its doors to the Catholic community in Welland. It has served the downtown Welland for over forty-five years and continues to be a vibrant component of the Welland educational community.

Our school is also home to one of four Cyberquest 21 Studios. Grades 7 and 8 students within the Welland / Pelham and Lakeshore area attend our Cyberquest Studio throughout the year. The Studio introduces students to broad- based technologies including aerospace, engineering design, electronics, desktop publishing, audio-visual and robotics.

Total enrolment as of September 2011: 326