for Chance and the Butterfly by Maggie DeVries
Every time Chance turns around, he gets in trouble. In school, he can't sit still. Reading is hard and math is harder, but anything to do with science fascinates him. When his class starts raising butterflies from caterpillars, Chance is hooked. School is suddenly fun again, but when he decides to take his caterpillar home, he learns that loving something often means letting it go.
Publisher description retrieved from Google Books.