CDNIS is an active member of the ISSFHK, SEASAC, PASS and the HKSSF. The academic year is split up into four seasons. In each season students have the chance to do a variety of sports throughout the year. This way, students can also practice or learn a new sport each season exposing them to more sports. In most sports we categorize the different age groups as U9, U11, U12, U14, U16, and U20 (SEASAC Team). The age division depends on the athlete’s age as of September 1st. For example; A student who is 13 on September 1 of the academic year is U14, a student who is 14 on September 1 is U16.