The book made a huge impact on me at age 12, and I've read it many times as an adult. The narrator was very emotionally mature for a 16-year-old, but was meant to be read so she wrote it in retrospect.
Tuned Out, written by Maia Wojciechowska , which I also read it in 7th grade, is set in the summer of 1967 when a boy realizes his brother who he idolizes is a drug addict. Many scenes take place in Greenwich Village and on the NYC subway. What a great voice and a lesson to be learned.
In 7th grade I also read It Can Happen to Anyone by Margaret Maze Craig. Similar to Mr. & Mrs. Bo Jo Jones, this was set in the 60s also.
This story is about three kids whose parents disappeared while on vacation at a Florida resort. The kids decide to walk home to Georgia.