The ACC Championship is an all association elimination tournament culminating in the crowning of the ACC Champion School in each sport. The Championship was introduced in 2019.
The Championship offered the following competitions in 2020;
- Basketball - Junior Boys and Girls Y7-9 and Senior Boys and Girls Y10-12 teams
- Soccer - Senior Boys and Girls Y10-12 teams
- Netball - Senior Girls Y10-12 teams
Teams are open to any student enrolled at an ACC school.