The point being that eight hours a day, teachers are de facto parents. So I agree with the Lege that two consenting adults, in a school environment, are sometimes not both adults. One is an adult and the other a child and age doesn’t change that. As for your daughter — I mention her because I wonder how you would react if you were the 17-year-old’s parent. This is her coach and, to use my argument, her parent when you aren’t there.
(To Trey and other FBvians: Eric would probably win. I argue, sometimes I yell, but I haven’t thrown a punch since seventh grade. Eric’s gamier than that.)