Responsibility

Teacher: Each of you is responsible for your own learning

Students: Duh!

Why?

You can lead a house to water but, you can’t make it drink.

Basically, this is the idea that “you can give someone the opportunity to do something, but you cannot force them to do it if they do not want to” (http://idioms.thefreedictionary.com/You+can+lead+a+horse+to+water)