Established in 1931, St. Mary's High School is an educational institution that serves students in grades 9 through 12. It conducts classes in various subjects, including English, social studies, foreign languages, science, fine arts, and physical and religious education. The school maintains a computer lab that features more than 200 laptops and desktop computers. St. Mary's High School encourages participation in a range of sports activities, such as cross-country, basketball, hockey, track and field and golf. The school is accredited by the North Central Association. It has a parents association that organizes several fundraising activities. St. Mary's High School also offers financing and counseling services. The school conducts various extracurricular activities, including art, band, broadcasting and chess clubs, student council, theater and wellness team. It is located in St. Louis.