I think personally questioning is good, if done to find factual information. Put stats in front of eyes like GPA's of teams and retention up there as a top priority (they are student athletes first!) Then get things like track record of National Qualifiers, All Americans, and Average Regional and National placings. I think most of the coaches have completed at minimum 2 years now at their institution, but maybe an overall synopsis of % based on year at a school and output would be a good evidence of how things are going.
