For more than 150 years, St. Mary's School has been providing spiritual education to children from kindergarten through eighth grade. Based in Massillon, Ohio, the school operates through Gradelink, Diocese of Youngstown and St. Mary Parish institutes. Its Gradelink school offers a series of online grading programs. The school also provides preschool education for children of 3 and 4 years of age. It houses a pro shop which offers gym shirts, sweatshirts, shorts, sweatpants, sport shirts and hoodies.