What If School Only Existed In Dreams And You Had To Pass Dream Tests?

Imagine if schools didn't exits in real life at all. No classrooms. No homework. No dragging yourself out of bed in the morning. 

Instead, every night you fall asleep, you are there, in your dreams. A dream-school. Floating hallways. Teachers who can change faces. Desks that drift through clouds. The rules and subjects are different every night. One day, you are trying to solve riddles of the stars. Another day, you are trying to decode memories to pass your finals. 

And what happens if you fail? You don't wake up until you get it right. 

Would you want to go to dream-school?

 All scenarios described are fictional and purely imaginative.