SAT: http://sat.collegeboard.org/home
Study Guide Zone: http://www.studyguidezone.com/
StudyTips.org: http://www.studytips.org/
Test Prep Review: http://www.testprepreview.com/
The ACT: http://www.actstudent.org/
THEA Test Home Page: http://www.thea.nesinc.com/