70s/80s children's book similar to Beverly Cleary with an elementary school girl who loves Sally Ride. She got/tried to get lost during a school outing?
I could be mixing up a bunch of different books so apologies. I remember reading this book multiple times back in the 80s. The girl loved Sally Ride (might be in the name of the book?). The only other thing I recall is that she went on a field trip, or maybe just during recess, and snuck off into the woods and pretended she was abandoned so she put a small smooth rock under her tongue because she read to do that in a book?
I thought it was a Beverly Cleary or Judy Blume but none of their books are ringing a bell.
Searching has been no help because I keep getting results for non-fiction kids books about Sally Ride.
Thanks!
EDIT: May be from a different book but I recall her being at school and referencing "loose leaf paper" enough times that I had to ask my mom what it meant lol