Okay, I think there is a misunderstanding here. I'll explain what I am trying to say.
Treating like an adult: Teacher allows for independent learning, doesn't mind the class having a bit of a chat now and then, you do what you have to do and if you get the marks good for you, teacher acts like a guide to assist you if you are lost.
Treating like a kid: Most learning is dependent on the teacher, teacher says do this you do it, teacher says do that you do it, you wait for the teacher to tell you what work you should be doing, you wait for the teacher to assign you with the information you should be studying, teacher doesn't allow much noise/talking, class is possibly in a seating plan, have to line up outside classroom for each lesson like kids.