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MasterTutors SAT Prep
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The Official SAT Study GuideThe Official SAT Study Guide by The College Board
Buy new: $13.57 / Used from: $4.44
The standard for evaluation of your progress.
11 Practice Tests for the SAT and PSAT, 2008 (College Test Prep)11 Practice Tests for the SAT and PSAT, 2008 (College Test Prep) by Princeton Review
Buy used from: $9.39
No, the questions aren't perfect- they still lack the subtlety of College Board problems. But when used to prepare on particular topics and subtopics, it still helps. And they are a little bit harder.
How to Prepare for the SAT: 2007-2008 (Barron's How to Prepare for the Sat I (Book Only))How to Prepare for the SAT: 2007-2008 (Barron's How to Prepare for the Sat I (Book Only)) by Sharon Weiner Green
Buy used from: $1.17
These questions feel as close to SAT problems as you'll get from a source *outside* the College Board.
Vocabulary Workshop: Level F (Vocabulary Workshop)Vocabulary Workshop: Level F (Vocabulary Workshop) by Jerome Shostak
Buy used from: $4.40
Best workbooks for those serious about improving vocabulary. Level F is about right as a start for most people.
Kaplan SAT Vocabulary Flashcards Flip-O-Matic (Flip-o-matic)Kaplan SAT Vocabulary Flashcards Flip-O-Matic (Flip-o-matic) by Kaplan
Buy used from: $27.88
Often-seen words on the SAT, arranged in an easy-to-carry-around flash card format.
Reading and Writing Workout for the SAT (College Test Prep)Reading and Writing Workout for the SAT (College Test Prep) by Geoff Martz
Buy new: $12.00 / Used from: $0.21
Some nice approaches to systematically analyzing problem types on this portion of the SAT