In Maine, youth age groups are usually named by grades in school as follows:
8U (grades K-2), 10U (grades 3/4), 12U (grades 5/6), 14U (grades 7/8)
These links provide information specific to the youth game and the Maine Youth Girls Lacrosse Association, as well as some general information about officiating girls lacrosse.
3-seconds closely guarded: https://www.youtube.com/watch?v=_n92UhEZOHA
Shooting Space Videos (uses ropes to outline shooting space violations): https://www.youtube.com/watch?v=pgJzzpjrdFA
Women's Game Officials' Training Manual (information and guidance about how to officiate girls' lacrosse):
Cumberland County Conference Girls Lacrosse Guidelines 2024:
USA Lacrosse 2025 Guidelines for Girls Youth Lacrosse:
It will be very helpful to print a copy of each of these documents and carry them with you in your lacrosse officiating bag to review before your games.
2025 Youth Rules Comparison Tables 8-14U girls - Maine modified
Link to the Comparison Table (includes full details)