Louisiana Department of Education
Kathy Schrock's Guide for Educators - categorized list of sites useful for enhancing curriculum and teacher professional growth (updated daily)
Education Index - guide to useful education-related sites on the Web
Blue Web'n Learning Sites Library - a library of "blue ribbon" learning sites on the Web
Teaching & Learning on the Web - over 673 examples of how the web is being used as a medium for learning
Teachers Helping Teachers - a home page by teachers for teachers
HCISD - Lesson Plans and Internet Resources
The Search Beat - teaching and educational resource center
Teachers First - classroom resources and lesson plans for K-12 teachers
Rand McNally k12online.com - free samples, outline maps, lesson ideas, and links to other geography related sites
ERIC - Resources for Teachers - the educational resources information center
Eduhound - the engine for everything education K-12
MarcoPolo - provides access to daily classroom planning materials, lesson plans, links to high-quality sites
ThinkQuest - program that allows participants to assimilate, organize, and share knowledge with other around the world
Big Chalk - provides a broad spectrum of educational Internet services to teachers, students, parents, librarians and school administrators in the K-12 educational market

If you have any suggestions to add to the above lists please let me know at glewis@lincolnschools.