As more and more school districts ban books from their classrooms and libraries, the Brooklyn Public Library is sharing its resources with teens around the country to fight encroaching censorship.

An American Library Association report says efforts to restrict books accelerated last year. The number of individual titles challenged in school and public libraries rose by 65% over the prior year.

An Orange County, California, library system violated state law with its policy of restricting young people’s access to “sexually explicit” materials, a judge has ruled. Earlier this month, Orange ...