SAT and ACT Exams

Q: When should my child take the SAT exam for the first time?
A: Springtime (May or June) of their Junior year.

College Board - Register for the SAT
ACT Test - Register for the ACT
SAT Word of the Day  - Vocabulary words with a quiz to test understanding - from The New York Times
How Stuff Works - explains the SAT exams and the types of questions asked