St. John's College (SJC) is a Roman Catholic high school located in Brantford, Ontario, Canada.

This necessitated the opening of Assumption College in September 1992, as well as Holy Trinity Catholic High School in Simcoe, Ontario in 2001.

[7][8] Alongside their academics, students have the option to gain practical work experience through apprenticeships and internships under the auspices of the Brant Haldimand Norfolk Catholic District School Board.

[11] Sports offered include basketball, soccer, cheerleading, rugby, volleyball, football, baseball, softball, track and field, golf, wrestling, badminton, curling, fly fishing and tennis.

The 2009 senior girls' basketball team captured the AAAA OFSAA gold medal on November 28, 2009.