St. Maurice competes in the Manitoba Highschool Athletic Association. At St. Maurice, the following sports are offered: 

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• Basketball : Grades 7-12

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• Badminton : Grades 7-12

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• Cross Country Running : Grades 7-12

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• Rugby : Grades 9-12

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• Golf : Grades 9-12

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• Soccer : Grades 7-12

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• Track and Field : Grades 7-12

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• Volleyball : Grades 7-12