Anyway, there's nothing more she can do for now, so Riley calls it a night and goes to sleep. 

Sarah doesn't want to sleep in the igloo tonight, so she stays in the dining room, playing until she's sure Riley is asleep enough for her to go back to the bedroom. Or maybe she'll sleep on the living room couch.

It's still early, but Kelly can't take it anymore and goes to bed too.

Before long, Dale joins her. Everyone is tired and eager for the term to end. All that's left is to go to sleep and wait for daybreak to receive their report cards, then they'll be able to leave the campus for a well-deserved vacation.