First published as Breadsticks and Blessing Places in 1985. So this story was written presumably in the early 1980s and set in Chicago. Toni goes to an all-Black elementary school (though her new teacher is a white woman). She is about to take the entrance exam to King Academy, and she's not even sure she wants to go there. Later in the story, she sits in on classes at King, and it's the first time she's been in a school with people of all different races.
Toni is twelve, "almost a teenager," and struggles so much with math while excelling in language arts. (I relate so hard to this.) Everyone is pressuring her to study harder in math. There's a puberty story line, friendships, and well-drawn family life and community.
It gets super sad because the main story line is that her friend gets hit by a car and dies, and Toni struggles to process the death and her grief. It's hard to read that, but I very much enjoyed the rest of the story.