Graphic Design Sources

Adobe offers some visual design curriculum for use by schools -- some Photoshop related, some using other software:
http://www.adobe.com/education/instruction/teach/visualdesign.html

Here's a graphic design class syllabus with some resources, assignments, etc.
http://finearts.fontbonne.edu/115/115syl.html

A Graphic Design website to explore further:
http://gdbasics.com/index.php?s=pointlineplane