Verbal Abuse of Coach to Players

[Don in MN]

I'd definitely write letters to the athletic director, principal and superintendent, being very specific about what you observed in your role as an impartial game official.

Social Services? Maybe, especially if there is evidence of extreme verbal, emotional or physical abuse. The devil's advocate in me says that since basketball is an extracurricular activity and not required, that a child can withdraw from the activity, but on the flip side, no child deserves to be abused in the ways you have described.