Modern Classroom Escape

Sleeping in class - this is a very bad lesson, because you can sleep through the call and the time when all go home and close the class. Our hero John loves to sleep in class, but this time he slept through the end of the lessons, and all had already gone home and closed the class teacher with a key. Waking up, he finds out that there is no one to help him and save the poor boy only you can. Look for items that will help to get out of class, and solve puzzles.