Robert PostmanRobert Postman is a college professor and test preparation expert. His many scores of books, including popular ACT and SAT books, have reached tens of millions, and are found in schools and in bookstores throughout the United States.Ryan Potman is an award winning secondary mathematics teacher, who grades mathematics AP tests. He holds a masters degree in mathematics, and has made significant contributions to SAT books.Elizabeth Postman is a widely recognized secondary mathematics teacher and mathematics chair. She holds a masters degree in mathematics and has made significant contributions to ACT and SAT books. Read More Read Less
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