The IHSAA and IGHSAU will use the NFHS allowance for state adoption to introduce a 35-second shot clock for varsity basketball, required of participating member schools starting in the 2022-23 season. Use of the shot clock in sub-varsity competition will be allowed but not required. With a date set for statewide implementation, experimental exceptions will not be granted during the 2021-22 regular season.

To encourage standardization among states, 35 seconds was the timing provided by NFHS approval. Further shot clock information and rule implementation will be provided by IHSAA and IGHSAU as it becomes available ahead of the 2022-23 season.