The classroom is the first place to unlock in Beat the boss 2. It is free and it's where you start off the game.
Like the other rooms, the classroom also has achievements in it that you can complete such as make the chalkboard white and kill the boss with frogs.
Things to doEdit
In the classroom, you can turn on the fire alarm, stuff the boss's head into the trash can, slam the door into the assistants face, throw frogs, draw and write on the chalkboard, and electrocute the boss using the speakers.