I don't think a bad relationship with a coach is an athletic problem but a social and well being issue.Coaches have a huge influence on athletes , good and bad. There are many reasons families move their kids from one school to the next and if that student happens to be an athlete , that student should not be punished because of it. The schools exist for the students . I have seen athletes where the only positive thing in their life was the sport they are a part of . They move and lose eligibility and now they find something more destructive to do or a family just does not like a school for what ever reason, and pull their kid out and put them in another school and kid does not want to leave but is a minor and has no say so. They should not be punished.