You Don't Know Everything, Jilly P.! by Alex Gino

Jilly P thinks she knows a few things about interacting with people who are Black and Deaf -- she has Black family members, and a Black, Deaf online friend. But when her baby sister is born deaf, she finds she still has a lot to learn about that, and about other things happening in the world as well.

This was a good, quick read, with great characters. It's didactic in spots, but the author's note makes it clear that it was written with didactic intent. I thought it was interesting that Jilly and her friend never had to face up to the low-level bullying that they were doing in their chat room, but maybe that's a topic for another book -- after all, everybody in this world still has things to learn.

(Reviewed from a copy borrowed through my library system.)