From the Anniston Star:
This AP story has a bit more info about the project:
The Star/University of Alabama team set out last fall to collect all book challenge forms filed in the past five years in the state's 132 city and county school districts and a few state-supported schools that aren’t part of typical districts. Some districts responded immediately; some responded after multiple requests for the forms, which are public record.
Nine districts reported challenges, a few of which predated the five-year span of The Star’s records request. Seventy-seven districts reported no challenges in the past five years; 46 districts didn't provide any information at all.
"I feel the most important things to consider when reviewing a book are: is the material appropriate for the age level, is the material well presented, (and) does the material support the curriculum of the school?" Teresa Offord, library media specialist at B.B. Comer High in Talladega County, told the newspaper.
A few titles are given (including, yes, the Vladimir Tod series), but I wasn't able to find a full list.