As a member of SCBWI I receive their bulletin and read it cover to cover. In the December/January issue they featured a column of "Needed Subjects." It lists requests by students, parents, teachers and librarians for books dealing with a particular subject. I put in a call to the Mt. Lebanon Library to get Katie McGuinley, the children's librarian, her suggestions for needed and most-requested subjects.
Improving social skills such as sharing, friends, controlling temper and sibling rivalry, children confronting special needs such as being confined to a wheelchair
Endangered animals, gross animals and insects, environmental topics such as going "green" and recycling, also visits to the doctor and dentist
Presidents-current and past, sport stars, pop stars, women leaders in science such as Marie Curie and female writers such as Laura Ingalls Wilder and Jane Austin