Dr. Gary Gruber is nationally recognized as the leading expert on the SAT, ACT, test-taking methods, and critical thinking skills. His methods have been used by PBS, Sylvan Learning Centers, and school districts, as part of MyMaxScore#39;s online SAT and ACT prep, and as the central college prep products in the testing area of College Countdown. His books on test taking, test preparation, and critical thinking skills have sold more than seven million copies. Dr. Gruber#39;s strategies have helped provide measurably improved results in test prep for the SAT, ACT, PSAT/NMSQT, and GRE tests, among many other standardized tests across all age ranges.