From the 2023 National Championahip website:

ROSTER VALIDATION

The rising 8th National 2023 championship is trying to ensure we don’t have "super" teams or all-star teams made exclusively for this championship event. All teams must be in the 2023 class and a team that competes year round.

In order to be considered for this Championship the club director must do the following.

Submit a complete roster by Jan 15, 2018. Roster must include players number, full name, school, and birthdate.
Provide a copy of the players report card from the 2017 fall school year.
Provide proof of your spring league (you will need their records for seeding purposes).
Provide a list of all fall 2017/spring 2018 tournaments, and summer schedule.
Pay tournament non refundable deposit $1,000