What's the Name of That Book??? discussion

Hey, does anyone know of a book with a red cover with a little devil on it? I don't remember much about it, only really the cover. The only part of the story that I remember is that a girl (and I think another family member, a cousin maybe?) go to a school for smart people. I think the school was on top of a library, but it might not be. Sorry, I know it's not much info. Also, if you know a book that sounds like that but with a different cover, it might be it, just with a different cover. Thanks so much!

When did you see this? Also where - bookstore, library, somewhere else?

I saw the book at the library maybe 3 years ago? Also, it was a middle grade book I believe.

Any chance it is this one? -

Edit: I just realized that this might not be a middle grade book!

or maybe

https://www.goodreads.com/book/show/3...

I'm pretty sure this is it! She and her uncle, who's younger than her (surprise baby), go. One of them's a genius, but the other's not, so they're surprised. It turns out the school changed the district of their house to pull them in.

To Sarah:

Omg thanks you soon much! That's the book! I've spent forever! Looking for this book. Thanks so much! (Also, thanks to anyone else who commented :-)

Story Time for the cover and click.