Great Places to Start!

ipl2 (http://www.ipl.org/) is a “library” of good web sites arranged by subject. Check out the special collections and the “Resources by Subject.”
My Virtual Reference Desk (http://www.refdesk.com/)claims to be the best source for facts on the internet, and if I hadn't just gone to the link above this one, I'd believe them!
Multnomah County's Library Homework Center (http://www.multnomah.lib.or.us/lib/homework/), where someone has put a lot of effort into helping students find quality research sources on the internet.
High School Ace (http://highschoolace.com/ace/ace.cfm) is clear and organized with links to all different subjects. Also has SAT question of the day, an ongoing poetry contest, and a LOT more!