Library in the Sky - Educational Web Resources This is a useful and large list of websites relating to education broken down into different categories. Well worth a visit for librarians.
From the site:
"The Library in the Sky is a database of interesting and useful educational Web sites for those involved in education. Find the information you want through the Search, User Tabs, by Department, or Materials."
"Currently there are 1551 educational Web sites listed in the Library in the Sky. Search the entire database of resource links, or narrow your search to those Web sites that will most likely be of interest to you."