From Tennessee's (TSSAA) Rulebook:
"50% Rule – Applies to basketball, baseball, and softball. Participation (includes practice or games) during the
school year on a non-school team prior to the school season by students that will play the following season on the
high school team is limited to 50% of the number of players required to play the game (3 in basketball, 5 in
baseball, 5 in girls softball). Only the specified number of students participating on a non-school team prior to the
school season may be placed on the high school eligibility list the following season. Those students cannot be
interchanged on the school’s team roster."
Note that it includes incoming Freshman, Parents and TB coaches should be aware of their rosters and the rules, and the HS coach is basically responsible for making sure nothing shady happened in the fall.
"50% Rule – Applies to basketball, baseball, and softball. Participation (includes practice or games) during the
school year on a non-school team prior to the school season by students that will play the following season on the
high school team is limited to 50% of the number of players required to play the game (3 in basketball, 5 in
baseball, 5 in girls softball). Only the specified number of students participating on a non-school team prior to the
school season may be placed on the high school eligibility list the following season. Those students cannot be
interchanged on the school’s team roster."
Note that it includes incoming Freshman, Parents and TB coaches should be aware of their rosters and the rules, and the HS coach is basically responsible for making sure nothing shady happened in the fall.