From the Office for Intellectual Freedom of the American Library Association
The Office for Intellectual Freedom is processing reports to finalize the number of challenges in 2016 and its annual list of frequently challenged books. They are asking for any information on challenges in your state or region during the year that you are aware of. The final deadline for reporting 2016 challenges to OIF is Friday, Feb. 17, 2017.
Challenges reported to ALA by individuals are kept confidential, and they will cross-check your report with existing entries in the database to avoid duplicates. You may report challenges by filling out and submitting their new online form.