Band
Students in grades 6th-8th may participate in the school band. Band members have class for the entire school year and perform in several concerts. A culminating trip to Marian University at the conclusion of the school year provides an opportunity for St. Simon band members to collaborate with collegiant band members.

Choir
Students who are in the choir help lead songs during Mass. 

Theatre
St. Simon students audition to be a part of the fall musical. This year's production, Cinderella, will take place at Fall Creek Valley Middle School on November 11th and 12th. 

Student Council
Leadership, service and school spirit are the three pillars of St. Simon Junior and Middle School Councils. Students participate in several service activities, including the annual Haunted House Food Drive.

Academic Olympics, Spelling Bee, Geography Bee and Spell Bowl
Students compete in a variety of academic competitions against other local schools. 

Battle of the Books
Teams of students read books selected for the competition and compete against one another  regarding their knowledge of the text. 

Robotics
Students are exposed to robotics at all grade levels but can compete state wide when in middle school.