School librarians [will] have less freedom to choose books and schoolchildren [will have] less ability to read books they find intriguing, experts say. In the past two years, six states have passed laws that mandate parental involvement in reviewing books, making it easier for parents to remove books or restrict the texts available at school, according to a tally kept by nonprofit EveryLibrary. Policies are proliferating at the district level, too. A Texas system will divide its library into juvenile," "young adult" and "adult" sections, with parents choosing the "level" their child can access. "This is a state-sponsored purging of ideas and identities that has no precedent in the United States of America," said John Chrastka, EveryLibrary's executive director. "We're witnessing the silencing of stories and the suppressing of information [that will make] the next generation less able to function in society." A flurry of parent-staffed websites reviewing books for inappropriate content have appeared " including "Between the Book Covers," whose website says "professional review sites cannot be entrusted," and BookLook.info, "a place for taking a closer look at the books in our children's hands." There are also Facebook groups like Utah's "LaVerna in the Library," which "collects naughty children's books." As states and districts adjust their reading rules, parents and students are working to change things, too. Teens in Texas, for example, have formed "banned book clubs" " while in Missouri, students are suing their district to restore eight pulled books.