Brain Snacks: Tasty Tidbits of Knowledge
Get this: all of Francisco's experiences are based on the real life events of the author, Francisco Jiménez himself. No need to make up drama in this book. (Source.)
Jiménez wrote a children's book called La Mariposa, which is based on a story in The Circuit about Francisco and the caterpillar. (Source.)
If you're wondering what happens to Francisco after The Circuit's tragic ending, it's your lucky day. There's a sequel called Breaking Through and it's got your name on it. (Source.)