Academic Assistance Access:
Help with homework or assignments in almost any field from junior
high to college. Posted questions are e-mailed to a group of
qualified volunteers, and most questions will get a response within
twenty-four hours.
http://www.tutoraid.org/
Doctor Homework:
A free service aimed at helping those with academic concerns get in
touch with the people who have the answers.
http://www.doctorhomework.com/
