Seeking homework resources.

Have you ever conducted a survey or analysis of Web sites or resources that provide homework assistance? I think that a link or information regarding homework assistance (even if there is a fee) would be of great benefit to students and parents alike. As a technologist and parent I find myself constantly trying to find those types of resources, usually to no avail. Some book publishers provide such assistance, though from what I've seen it leaves much to be desired.

Julio Velasquez, IT director, Somerset Area (Pa.) School District