From Kyle in the girls forum:

REGION 4-3A TIE-BREAKING STEPS

Step 1. Region Point System
The following point value will be used in assigning points for a win within the region:
1st Place.............6 points
2nd Place.............5 points
3rd Place.............4 points
4th Place.............3 points
5th Place.............2 points
6th Place.............1 point

If two teams are tied for a region position, each team will be acknowledged as that particular seed when the point system is used. (Example - if 2 teams are tied for 3rd place, any win against either team would be assigned 3rd place points.)

Step 2. High School League System

The following point system will be used if teams are still tied:

A WIN FROM A
4A school with a non-losing record = 5 points
4A school with a losing record = 4 points
3A school with a non-losing record = 4 points
3A school with a losing record = 3 points
2A school with a non-losing record = 3 points
2A school with a losing record = 2 points
1A school with a non-losing record = 2 points
1A school with a losing record = 1 point

IF TIED, THE WINNER WILL BE*
1. The team whose opponents have lost the fewest games.
2. The team whose opponents have won the most games.
3. The team whose opponents have scored the fewest points at the end of regulation play (all games).