Anyone who has ever spent much time around 2-5yo children KNOWS that depriving them of sleep is
never a good idea. LOL.
So I'm thinking that midday rest periods also promote teacher sanity.

Val, our
"Advanced Mathematical Concepts" textbook isn't Brown, either-- in fact, it's a Glencoe product which apparently generated so much pride in ownership that, er-- well, I haven't yet figured out WHO the author(s) is/are. LOL. Not listed on the cover.
So it may well be that the problem set only
goes to 37, as you note.
I can't tell because the online textbook can't be opened. By either me or DD, using any one of four different internet browsers and/or three different reader applications. I can look at the cover, but that's as far as navigation works. LOL.
ETA: FINALLY! Yes, in looking at the pages where the exercises are located, Val gets the prize-- the set ends with number 37!

I'm not sure what she wins, but anyway... as part of the bonus round, #37 is a
SAT practice question! (yikes) Multiple choice!
37. Which of the following is NOT larger than 5 X 6^12?