There is an "Official Order of Events" for those of you trying to figure out what time your child's event is-- (from the MSHSL website)
OFFICIAL ORDER OF EVENTS
Track Events:

4x800-Meter Relay
100-Meter High Hurdles (33")
110-Meter High Hurdles
100-Meter Dash
4x200-Meter Dash
1600-Meter Run
4x100-Meter Relay
400-Meter Dash
300-Meter Hurdles - Girls
300-Meter Intermediate Hurdles - Boys
800-Meter Run
200-Meter Dash
3200-Meter Run (Finals Only)
4x400 Meter Relay

Field Events:

Pole Vault
High Jump
Long Jump
Shot Put
Discus
Triple Jump