High school lacrosse in Boulder County is sanctioned by the Colorado High School Activities Association (CHSAA) and plays in the spring season. Multiple schools in the Boulder Valley School District and surrounding areas field varsity and junior varsity teams. Who It's For Students in grades 9–12 enrolled in a CHSAA …

Middle school is where many Boulder County players develop their skills and start competing at a higher level. Programs at this stage bridge recreational play and the more serious high school game. Who It's For Players in 6th through 8th grade (ages 11–14). Both boys and girls programs are available. Some players …