James Irwin Charter High School is a member of the Colorado High School Activities Association (CHSAA) and participates in a variety of activities during each season of play. The chart below shows which activities are currently available here at JICHS.
| Boys | Girls | Co-Ed | |
| Fall | Soccer | Volleyball | Cross Country |
| Winter | Basketball | Basketball | |
| Spring | Volleyball (non-CHSAA) | Soccer | Track & Field |
| Year-Round | Cheerleading, Knowledge Bowl, Band, Choir |
The cheerleading squad cheers for all of our home basketball games and competes in many other cheer competitions throughout the year. The cheer squad has been one of the most successful programs at the school, coming in first or second in many competitions throughout the state of Colorado as well as national competitions. The soccer program has also enjoyed success these last two seasons. In 2008, they advanced to the 3rd round of the CHSAA 3A State Playoffs going in as the #6 seed. This year, they enter the playoffs as the #8 seed, with a record of 13-2 for the regular season and repeated as Fountain Valley Invitational Tournament Champions.
To participate in interscholastic activities here at James Irwin, you must first make sure you have a physical completed by a doctor with the CHSAA form filled out (available in the Athletic Packet here on the website) prior to tryouts of the activity in which you wish to participate. The other forms in the Athletic Packet must also be filled out, signed and turned into the Athletic Office before participation begins. Currently, there is an $85.00 athletic fee ($42.50 for those who qualify for free and reduced lunch) and a transportation fee (up to $100.00) for each activity in which a student participates. Those fees are expected to be paid before any player plays in any game for the season, unless arrangements are made with the Athletic Office ahead of time.
Participation in any extra-curricular activity is a privilege at James Irwin, and all academic standards (minimum 2.0 GPA with no failing grades) must be maintained to compete and continue throughout the length of the season. All athletes are expected to demonstrate the core values we teach here at James Irwin (Honesty, Integrity, Respect, Responsibility and Excellence). These values are expected to be demonstrated even in the midst of competition on the court or field and in every activity of our school. Participation with any of our teams should produce characteristics of teamwork, leadership, responsibility, hard work, and integrity as each team member strives to work together to accomplish their goals throughout the season.
We hope that participation in our programs will result in our students getting a balanced education with our rigorous academic standards in the classroom and high standards we expect from our athletes as well. We are honored to have the opportunity to be a part of your student’s education and development!