Lesson Plans:

Public School Review-- Searchable information about public schools including student achievement data, demographic breakdowns and more.
ERIC - Education Resources Information Center
http://www.aolatschool.com/
Awesome Library
A to Z Teacher Stuf
Education World 
Edutopia.org
The Gateway to Educational Materials
LessonPlanz.com
Lesson Plans 4 Teachers
Lesson Plans and Resources
New York Times Learning Network
PBS TeacherSource 
refdesk.com 
RubiStar
WebQuest

More Stuff For Teachers:
Big Six
Bulletin Board Ideas
Cisco's Virtual Schoolhouse
Clip Art
Economic Education
Education and Teaching Links 
History Channel
National Center for Educational Statistics
National Council of Teachers of English
National Science Teachers Association
Project-Based Learning
PuzzleMaker.com
SaveOnEnergy
Teaching with Energy
Templates for Teachers
US Dept. of Education
Washington State OSPI
West Sound Consortium's School-to-Career
Sites and Resources for Teachers

Online Projects
International Education and Resource Network

Grants
Federal Funds