I can think of a couple of books that might suit your students.
A Tree Grows in Brooklyn by Betty Smith, 1943 -- a coming-of-age story about a young girl in New York. There are references to sexual matters, but sexual activities are not described in the book. I recommend this one highly.
http://en.wikipedia.org/wiki/A_Tree_...rooklyn_(novel)
Ordinary People by Judith Guest, 1976. A family recovering after the accidental death of a teenaged son. The character of the mother is particularly interesting. The protagonist is an 18-year-old boy.
http://en.wikipedia.org/wiki/Ordinary_People_(novel)