got an email from our local referee assignor asking about input on this, attached a l;ink to Georgia's mercy rule:
http://gsoa.net/n/p/1085.html GHSA Mercy Rule
National Federation Mercy Rule
If a Team is 7 or More Goals Down at the Midpoint of the first half (20 or Less Minutes Played), the half will end and the Second Half will be 20 Minutes.
If a Team is 7 or More Goals down at Halftime, the second half will be 20 Minutes in Length.
If a team is 10 or More Goals Down in the Second Half, the game will be Terminated.
Here are the decision points considering it is a HS Varsity match:
If you have achieved the 7-goal differential at the 20-minute mark of the first half, the half will end. The second half will be 20 minutes in length unless a 10-goal differential is attained and then the games ends.
If you have achieved the 7-goal differential at the end of the first half, the second half will be 20 minutes in length unless a 10-goal differential is attained and then the games ends.
If the goal differential goes below 7 during the second half, that half is still 20 minutes
If you attain a 10-goal differential in the 2nd half, the game ends immediately