Here are my top 50 essential websites, people, or blog posts for school librarians.  These are people and sites to which I consistently return.  Some of the entries below are skewed towards California school libraries, but I think they’re beneficial for anyone.

Listed in no particular order.

1. American Association of School Librarians (AASL). I continually refer to their Standards for the 21st Century Learner.
2. School Library Journal (SLJ).  If you can’t afford a print subscription, you can still access a lot of their articles and reviews.
3. School Library Monthly– In-depth articles that focus on instruction and collaboration.
4. Buffy Hamilton, a.k.a. The Unquiet Librarian.  Pretty much anything she does is noteworthy.
5. Joyce Valenza’s Never Ending Search Blog.  Great posts on research, new tools, and improving our instruction.
6. David Loertscher.  One of my library school professors.  His classes and his books shaped my views on instruction and collaboration.
7. Doug Achterman’s dissertation: Haves, Halves, and Have-Nots: School Libraries and Student Achievement in California.
8. School Libraries Work! (PDF file). Evidence that school libraries and school librarians make a difference in student achievement.
9. International Society for Technology in Education (ISTE).  Training, resources, and conferences on using technology in educational settings.
10. American Library Association (ALA).  Arguably the most influential library advocacy association in the world.
11. 2CoolTools.  Technology-related tips from CSLA‘s Jackie Siminitus.
12. A Media Specialist’s Guide to the Internet.  A collection of web resources organized by grade level.
13. Association of College and Research Libraries (ACRL). A division of ALA that focuses on college-level libraries.
14. Purdue Online Writing Lab (OWL).  Writing, grammar, style, and citation help.
15. Librarians Are Go.  Thoughts from Stacey Taylor, a librarian in Sydney.
16. Tool for Real-Time Assessment of Information Literacy Skills (TRAILS). It’s just what it sounds like- an assessment of info lit skills.
17. Tales from a Loud Librarian.  Ideas from Elizabeth Kahn, one of the winners of AASL’s 2012 Information Technology Pathfinder Award.
18. National Forum on Information Literacy (NFIL). An organization which seeks to integrat info lit into every area of society.
19. Association for Library Service to Children (ALSC). A division of ALA that advocates for children’s library services.
20. The Adventures of Library Girl.  Thoughts and ideas from Jennifer LaGarde.
21. TLC= Tech + Library + Classroom.  A blog by Tara, an International School librarian, that combines ideas from the library, technology, and classroom settings
22. VanMeter Library Voice.  Thoughts from Shannon McClintock Miller.
23. The Big 6.  A 6-step research model/process.
24. Doug Johnson’s Blue Skunk Blog.  Great tech-related thoughts.
25. Resources for School Librarians.  Very extensive list of resources for school librarians.  Maintained by Bertland.
26. Tim Gauntley’s Resourceful Curriculum for 21st Century Learning in a Classroom.  Lots of great resources for instruction.
27. Library Journal.  A magazine aimed mostly at public libraries, but good for school librarians who want to be well-informed about all types of libraries.
28. ReadWriteThink.  Resources for reading and language arts.
29. Association of Independent School Libraries (AISL).  Advocacy for independent schools and librarians.
30. Resource Shelf.  Interesting blog focusing mostly on digital search resources.
31. LM_Net.  An email list serve for K-12 librarians across the world.  This has been invaluable to me.
32. International Association of School Librarianship (IASL).  An organization for school librarians on an international level.
33. Library Displays  Creative uses of library displays.  Maintained by Elaine Pearson.
34. Partnership for 21st Century Skills.  Advocates for 21st century skills on a national level.
35. Cool Cat Teacher Blog.  Great teaching ideas from Vicki Davis that easily transfer to the library.
36. Tasha Bergson-Michelson, contributor to the Mind/Shift blog.  Great articles about searching from a member of the Google Search Education team.
37. ALA Tech Source Blog.  Articles on library and library-related technology.
38. Young Adult Library Services Association (YALSA).  A division of ALA that focuses on youth services.
39. Noodle Tools.  Online tools (some free, some paid) for researching and creating citations.
40. Library Ergonomic Training for Stacking.  A useful online ergonomics training from the University System of Georgia.
41. Tweendom.  “Tween” book reviews from Stacy Dillon.
42. Richard Byrne’s Free Technology for Teachers Blog.  Awesome tutorials and articles on using free technology.
43. Library & Media Center Facilities Design K-12.  Dozens of resources on school library and media center design from the National Clearninghouse for Educational Facilities.
44. iLibrarian.  Thoughts from Ellyssa Kroski on Library 2.0.
45. Kathy Schrock’s Kaffeeklatsch Blog.  The ed-tech diva!
46. TeleRead.  A news blog on e-books and publishing.
47. Google in Education.  Cool tools and training for teachers from Google.
48. Teach Information Literacy and Critical Thinking.  A large collection of links and resources maintained by Esther Grassian.
49.  Teacher Librarian Magazine.  Articles and news for teacher librarians.
50. YA Books Central.  User-submitted reviews for YA books.
51. Updated 11/12/12.  Bonus!  Lesley Farmer has a Digital Citizenship wiki with sample lessons and resources.
52. Updated 11/12/12.  Bonus #2!  CSLA’s Teacher Librarian Research Update blog posts the latest in school library-related research.

Did I leave out your favorite website or person?  Please leave a comment below.