This report is the 13th annual survey of censorship and related challenges to public education. The primary sources of information were teachers, librarians, school officials and parents who responded to mailed questionnaires or who contacted the researchers individually. In addition, information was gathered from news reports and various forms of outreach to parents and education professionals. The report is divided into two sections. In section 1, trends are reported and analyzed; section 2 is a state-by-state accounting of attacks on the freedom to learn, in which short descriptions of each documented incident are presented. These case studies illustrate how incidents have played out in communities across the nation. A map of regional and state breakdowns is also provided. Findings indicate the following: attacks overall continue at record levels; censorship remains at near record levels and censors succeed in half of all challenges; scope of challenges to materials widens; no area of public education was left unaffected; Religious right political groups lead the charge; objections based on sexual content, objectionable language, and religion are most frequent; anti-gay objections are on the rise; a new wave of sex education controversies exist; and student newspapers, school plays and magazines are frequent targets. Appendices include lists of most frequently challenged materials, books and authors and states with the most challenges. (AEF)