Is there a valid case to teach metaphysics and where would you do it. Would college be acceptable?
You can teach anything, even religion, but the question we need to ask ourselves is: is there is any benefit to teach it in schools or is it detrimental or confusing? I think the latter is true of metaphysics. Some university classes can be taught, but it needs to be done right. There is a lot of quackery being spouted in this subject.