Teachers work with students in classes that prepare them for college and include the required courses of English, Social Studies, Mathematics, Religion, Science, Physical Education and Health.

St. Croix offers 23 interscholastic sports teams including baseball, basketball, bowling, clay target league, dance, football, golf, hockey, lacrosse, softball, soccer, tennis, track and field, volleyball, and wrestling.

The Croixaliers is a vocal ensemble that performs at school concerts, off-campus area worship services, and state and national choral festivals and competitions.

Leadership opportunities include Model United Nations, Youth in Government, International Mentors, and many other programs.

Students living on campus have full access to the school's property, including the football field, weight room, and gymnasium, but only when a supervisor is on duty.