Comment on "parent meddling"
I think most reasonable coaches are open to calm, honest discussions with reasonable parents where everyone repects each others role in raising and supporting these exceptional young men, and the conversations are had at the appropriate time and setting.
I think if the parent respects the coaches role in determining team roles, playing time, mode of teaching, etc., and the coach respects the parents roles in raising and protecting the health and well-being of the kid ... then it's possible to have a positive, productive discussion where the coach and parents are working together from the same page.
You run into trouble when a coach dismisses or disrespects the parent's role with their child, when the parents disrespect the coach's role by crossing the line onto the field, or when either party just aren't "reasonable people".
Bottom line is that parents of HS players should work to have an open, positive relationship with their son's coach, but know exactly where the limits are on both sides as both parties respect those limits.