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Gary R. Gruber, Ph.D.
For over 40 years, Dr. Gruber has been recognized nationally as the leading expert on standardized tests and originator and developer of the critical-thinking skills necessary for use on them. It is said that no one is better at assessing the thinking patterns of “how” a person answers questions and providing the mechanism to improve faulty thinking approaches.
Gruber's Complete New SAT Guide 2018
20th Edition
Bookstores and Distributors: Please call for bookseller discounts.
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Gruber's Complete ACT Guide 2019
7th Edition
Bookstores and Distributors: Please call for bookseller discounts.
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