Marquette High School, located in Chesterfield, Missouri, is a secondary school in the Rockwood School District.Student bodyMarquette has a student body of approximately 2,260. Its public school extending boundaries cover the eastern portion of Ellisville, Missouri, and almost the entirety of Ballwin, Clarkson Valley, and Chesterfield. While Marquette serves the smallest geographical area of the four Rockwood School District high schools, it has the largest student body. A majority of students at Marquette are graduates of Crestview Middle School or Selvidge Middle School.Student Enrollment by Class (as of 2014)Demographics