About the Authors Sharon Weiner Green, M.A. (Oakland, CA) Sharon Green started helping prepare students for the PSAT and SAT as a 13-year-old assistant at her father's college entrance tutoring course; she has never stopped since. A National Merit Scholar, she holds degrees from Harvard College, New York University School of Education, and the University of California at Berkeley. Ira K. Wolf, Ph.D. (Los Angeles, CA) Dr. Ira Wolf has had a long career in math education. In addition to teaching math at the high school level for several years, he was a professor of mathematics at Brooklyn College and the Director of the Mathematics Teacher Preparation program at SUNY Stony Brook. Wolf has been helping students prepare for college entrance exams, including the PSAT, SAT, ACT, and SAT Subject Tests in Math for more than 35 years. He is the founder and former president of PowerPrep, a test preparation company on Long Island that has helped several thousand high school students prepare for the SAT. Brian W. Stewart, M.Ed. (Dublin, OH) Brian Stewart is the author of ACT, SAT, and PSAT test preparation books for Barron's. He is the President of BWS Education Consulting, Inc., a test preparation and tutoring company based in Columbus, Ohio and Indianapolis, Indiana: www.bwseducationconsulting.com. Stewart and his staff have helped students achieve perfect scores on the ACT, SAT, and PSAT, and reach their college admissions goals. BWS Education Consulting is available to work with students anywhere in the world via online tutoring. About the Publisher In the 1930s, Manuel H. Barron opened a bookstore in Brooklyn, New York. People from the community asked Mr. Barron about books that might be available to help their children study for the New York State Regents exams. After realizing there wasn't anything available, Mr. Barron's created his own study guides. 80 years later, Barron's has helped millions of people prepare for their next step.