Which is it?
In my estimation, 18 years old are still basically children. To be more precise, they are both children and adults, depending on what you are talking about and when. But they are probably too young to be cut loose with professional manipulators. Not all teachers are like that, fortunately. But when even they have to take a test to ensure their "suitability" to teach a non-academic course, then I think the entire higher educational system is in trouble. IMHO.