What is the exact nature of Bluish's illness?

How does Dreenie feel about Bluish and her condition? How does the rest of the class respond?

What is Dreenie's theory for why Tuli acts the way she does, with her fake Spanish and flamboyant mannerisms?

What is the importance of the Blue Morpho butterfly? What does it symbolize?

What is the significance of the surprise Dreenie and the class spring on Bluish in which they take out and wear knit caps?

Why does Bluish's mom respond negatively to the nickname "Bluish"?

What can the novel teach children about how to behave around those with disabilities or serious illnesses?