I’m not sure we’re talking about the same thing. If you and your child decide he or she is best suited to a certain high school and go through the process of getting a transfer, that’s one thing. If, however, that decision is reached because a coach (or, has been suggested previously on this thread, an agent of his) suggests the move, entices, encourages, and provides guidance through the process, that’s a different thing altogether.
I would be very dubious of a move from, say, Austin East or Carter to Bearden, or from Hardin Valley or Farragut to Powell, or from South Doyle to Fulton or vice versa. Neighboring school districts are easier to understand since Knox Co is forever shifting district lines.