Dr. Gary Gruber

More than 7 Million Gruber Books Sold over 40 Years

Dr. Gary Gruber is the Nation’s Leading Expert on Standardized Testing

“Dr. Gruber is recognized as the leading expert on standardized tests. His results have
been lauded throughout the country. His personal presentation spreads ‘contagious
enthusiasm’ like an epidemic with his audiences.”

– PBS (Public Broadcasting Service)

Dr. Gary Gruber


Learn more about Dr. Gruber’s mission to get the nation to be passionate about problem solving and to develop and hone critical thinking abilities to last a lifetime.



Articles and Reviews

Watch Dr. Gruber explain his legendary test-taking strategies for the Marin County Board of Education.