Dates are posted on each website and you can register online
(sign up to take the SAT) www.actstudent.org
(sign up to take the ACT)
Log in with your LAUSD google account at start page
After you sign up for the SAT you can link your account to Khan Academy and practice for the SAT. Statistics show that if you practice for 20 hours or more your score could go up more than 100 points. Also the more full length practice tests you take the more familiar you get with the material and the timing of the SAT.