This is a funny picture that shows some students in a class. Most of them are slept because we can see in the backgruond that it is in the morning and they probably have just arrived to school. There is only one person whose eyes are opened.

One of the student seems to have a headache. I would say that last night they went partying and that's the reason why they are so tired.

 I imagine they are waiting for the teacher to star the class, and when he will appeare, he will be surprised of the scene.