Rules for Activities Unless otherwise specified within these rules, Solid Rock Basketball adheres to the National Federation of State High School Associations (NFHS, nfhs.com) Basketball Rules Book. Leagues 1st-6th Grade Winter League Rules 2nd-8th Grade League Rules Rockin' Rookie League Rules 3v3 League Rules (Team) Tournaments 2nd-8th Grade Tournament Rules 3v3 Tournament Rules (Team) Fan Code of Conduct
