This is great that your library continues to have such a program each summer. Your son is as excited about it as in earlier years?
He is! He already picked most of his challenge books on signup day, and he's on a definite non-fiction spree, in anticipation of September!
Every year, I try to see if I can beat my old record of 37 books read in one summer.
The library, on the latest monthly newsletter, included a list of about 20 books that can be read in one day (if one reads all day, I assume...) I found 11 of them already in my ebook stash, so I'm going to see how many of those I can manage until school resumes. Six and a half weeks are nowhere near the three months I got in Greece, and I can no longer read half the day, but I believe I can manage at least one modestly sized book a week.
(The push to read Harry Potter that I mentioned further upthread? I did manage the first three over the summer, before getting stuck. GoF took me months
to go through.