Federal Resources for Education Excellence - Free, from the US Department of Education, this site offers more than 1,500 Federally-supported teaching and learning resources from dozens of Federal Agencies. It is a popular K-12 website.
Internet Public Library - This site links to thousands of high-quality websites carefully selected, described and organized by our team of librarians. Topics include current events and issues, holidays and seasons, helpful tools for information users, human interest and more. Includes separate sections for kids and for teens.
Multnomah County Library Homework Center - This is a well-organized Homework Center from the Multonomah County Library in Oregon.
Yahoo!Kids Study Zone - Homework help on a kid-friendly version of Yahoo!