test prep sites
Testive
http://learn.testive.com/
SAT (Math, Reading, Writing), ACT (Math, Reading, Writing)
Testive offers more than any book ever could: Over 3,000 adaptive questions and videos to study for the SAT and ACT; a free live weekly class; powerful review and reflection tools that orient around learning, not gaming the test; and a community of coaches and teachers that will motivate you to study and succeed for the SAT and ACT.
Khan Academy
http://www.khanacademy.org/
SAT (Math, Reading, Writing)
If you’re taking the SAT soon, you can start preparing today with questions from real SATs. After all, we believe all students who want to go to college should be able to prepare for the SAT at their own pace, at absolutely no cost. Download a real, full-length SAT practice test, watch Sal work through real SAT problems, and get even more practice using our interactive exercises, which feature tons of previously-unreleased problems from real SATs grouped by topic and difficulty level.
College Board's Full Practice Test
http://sat.collegeboard.org/practice/sat-practice-test
SAT (Math, Reading, Writing)
Offers the official 2013-14 SAT practice test but then wants to sell additional SAT practice tests. Best when used in conjunction with some of the other SAT preparation sites discussed below.
Power Score
http://www.powerscore.com/sat/help/content_practice_tests.cfm
ACT (Math, Reading, Writing), SAT (Math, Reading, Writing)
Free official ACT and SAT practice tests. Prepare online by taking these practice tests.
I Need a Pencil: A Service Provided by CK-12 Foundation
http://ineedapencil.ck12.org/
SAT (Math, Reading, Writing)
The nonprofit CK-12 Foundation offers 60 lessons, more than 800 practice exam questions, and a score projector (which predicts how the user will score on the real SAT). On Home Page, click "About I Need A Pencil SAT Prep."
ProProfs: Build and Test Knowledge
http://www.proprofs.com/sat
SAT (Math, Reading, Writing)
Claiming to have the most comprehensive collection of free SAT study resources online, this site provides practice exams, flash cards, quizzes, and cram sheets.
Study Guide Zone
http://www.studyguidezone.com/sattest.htm
SAT (Math, Reading, Writing)
Focusing on improving standardized-test score, this site covers a wide variety of standard college and professional tests. In addition to the SAT study guide, test flash cards, and practice questions, there is a "College Tips" advice section.
Vocab Test
http://www.vocabtest.com/
Vocabulary, SAT (Writing)
SAT vocabulary word test and practice using Sadlier-Oxford Vocabulary Workshop to help at VocabTest.com with SAT tests.
Dome SAT: Smarter Test Prep
http://www.domesatreview.com/
SAT (Math, Reading, Writing)
Commercial/For Profit: Features SAT preparation study guides, vocabulary drills, and practice tests; subjects include math, critical reading, essay writing, and vocabulary.
SAT Prep Resource Guide (suggested by Isabel Brannon)
http://www.smartscholar.com/sat-prep-guide/