Banned Book Reports (ACLU of Texas)  - Annual ACLU reports since 2002.
http://www.aclutx.org/projects/bannedbookspg.php?pid=45

Banning and Censorship of Children’s Books – Overview and links
http://childrensbooks.about.com/cs/censorship/a/censorship.htm

Book Bans and Challenges, 2007-2009
Uses Google Earth to show where book challenges occurred in the US.

Books Challenged and Banned in 2008 and 2009 (Illinois Library Association)
http://www.ila.org/pdf/2009banned.pdf

Controversial and Banned Books
http://www.banned-books.com/bblista-i.html

Frequently Challenged Books of the 21^st Century (American Library Association)
http://www.ala.org/ala/issuesadvocacy/banned/frequentlychallenged/21stcenturychallenged/index.cfm

Kids’ Right to Read Project  (American Booksellers’ Foundation for Free Expression and National Council Against Censorship) - Book censorship in 28 states from December 2006 to May 2009.
http://www.ncac.org/images/ncacimages/KR2R%202009(1).pdf
Scroll down to view list of books challenged and banned in US from 2003-2008.  Does not include school level (elem., middle. high).

School, Libraries See Hundreds of Requests to Ban Books
http://www.usatoday.com/news/education/2008-10-22-challengedbooks_N.htm

The Stories Behind Some of This Year’s Book Bans and Challenges (American Booksellers’ Foundation for Free Expression)
http://www.abffe.org/bbw-booklist-detailed.htm