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Clubs & Activities

A variety of clubs, sports, theatre performances, outdoor education, and other extra-curricular activities offer students the opportunity to explore a variety of interests, develop new talents, practice leadership, and work together to achieve common goals.

Middle School students are encouraged to participate in activities or sports after school. Activities rotate each semester and may range from game club and frisbee golf to Diversity University (service club) and circus performance. Meanwhile, athletic offerings correspond with the seasons (fall, winter and spring), and may include cross country, volleyball, soccer, basketball, lacrosse, and more. Teachers and students welcome ideas for new extra-curricular offerings in the Middle School at CSS as well!

Diversity University

This club offers a problem-based, service-learning experience for students, who identify a need at School or in their local communities and use design-cycle thinking to generate solutions. Once a project has been selected, students then work together with their teachers and guest professionals to build and install the product of their imagination and design. Students learn basic tool use and budgeting, and gain insight into how to utilize partnerships to foster change.

Middle School Chess

Game Club

Play chess, board games, RPGs, and LARP! Game club presents a learning environment complete with strategy, constructivist thinking, and empathy. This club is for anyone who enjoys friendly competition and the thrill of winning through the use of the mind!


Do you like to challenge and expand your knowledge of all things math, science, history, English, art, music, modern and historical times, and more? If so, then this club is the perfect fit for you! The Matchwits program takes part in four fun-filled competitions each spring. The CSS Middle School team has been named a repeat Black Forest champion in recent years and even participated at the national level in 2021! No prior experience necessary to join.

Middle School Matchwits

Math Olympiad

Founded in 1977 by Dr. George Lenchner – an internationally known math educator – Math Olympiads went public in 1979. Each year, nearly 170,000 students representing 6,000 teams worldwide participate in the Olympiads. These teams comprise all 50 U.S. states and approximately 35 countries.

Highlights for CSS Middle Schoolers include five monthly contests, administered November through March, which generate immediate feedback from other students around the globe. The goal of this program is to:

  • Stimulate enthusiasm and a love for mathematics
  • Introduce important mathematical concepts
  • Teach major strategies for problem-solving
  • Develop mathematical flexibility in solving problems
  • Strengthen Mathematical intuition
  • Foster Mathematical creativity and ingenuity
  • Provide satisfaction and joy, and a thrill for meeting challenges