[2] The public school boundaries cover the eastern portion of Ellisville, Missouri, and almost the entirety of Ballwin, Clarkson Valley, and Chesterfield.

Girls' teams include basketball, cheerleading, club badminton, cross country, dance (Mystique), field hockey, golf, lacrosse, soccer, softball, swimming and diving, track and field, and volleyball.

[citation needed] In 2017, the girls' varsity softball team won the Class 4 Missouri State Championship.

[5] Marquette students outperformed the state average in the Missouri Assessment Program (MAP) testing for 2009.

[9] In 1999, Marquette student Ed Tulin won the Extemporaneous Speaking finals at NFL Nationals.