S01E10 of Young Sheldon:
Flora, I have to ask about the living arrangements. That's our main concern.
Well, I think I can reassure you about that. My husband and I have been hosting a student for the last several years who recently graduated and is now at Princeton. So we have a guest room available in our home.
I don't see why they didn't try to get different arrangements, either before or after the first day of living with the principal. There may be some assumed understanding that other arrangements are limited or expensive for them or something I missed earlier about how other arrangements violate other conditions (eg no dog).