- Barron"s all-new sixth edition of Pass Key to the GRE is an abbreviated version of Barron"s new full-size GRE test preparation manual. Reflecting the GRE"s brand-new format in both the Verbal and Quantitative Reasoning sections, this new Pass Key to the GRE offers extensive practice and review for all test topics plus two full-length model GREs with answer keys and answer explanations for all questions. Like Barron"s full-size GRE manual, this Pass Key version will be available in time for purchase by students planning to take the new-format GRE, which becomes effective in August 2011.