Reply #35: FYI, many challenges don't get reported

[Neurotica]

There is no national reporting mechanism that organizations such as the ALA and NCAC can use. They compile their lists using media reports, plus information from teachers and librarians.

In addition, some people challenge books, and the librarian/principal/superintendent agrees to move the book to a higher level (e.g., middle school to high school). This does not usually get reported, although the school system may track these types of challenges and resulting actions.