Lots of factors. How the officials write it up is crucial (hopefully you didn't have jamBUM as the official) Even with video we don't know what was said. That's where the officials report comes in. An ejection usually leads to a 1 game suspension unless it's level 2 and then it is 6 games. If a punch was thrown he's done.
I’d be very surprised if their appeal was approved, most video would be from the home side of the field and since this incident occurred on the visiting side it will be hard to see exactly what happened, the FHSAA will most likely defer to the officials call on the field. Dawson will most likely get a 6 game suspension and be out next week against Deerfield Beach.