How do you get the key to get out of defence against the dark arts classroom in Lego Harry Potter year 5?

In LEGO Harry Potter: Years 5-7, to get the key to exit the Defense Against the Dark Arts classroom, you need to complete a specific task. First, use the spell to summon the key from the cupboard in the room. Then, guide the key to the lock on the door to unlock it and exit the classroom. Make sure to interact with any objects in the room that can help you progress.