Carnegie http://webstart.carnegielearning.com/
Textbook webpage. http://poweralgebra.com
Algebra 2 Supplementary page http://www.jcoffman.com/Algebra2/
SAT Registration http://WWW.collegeboard.com
ACT Registration http://WWW.ACT.org
Math Warehouse (Great website especially for Trigonometry) http://www.mathwarehouse.com/