The Skill Builders help students prepare for the specific skills and subjects tested on an exam. They are designed to tutor students on every skill level, from high school to graduate or professional school. Keys are included to show students which chapters to study for specific tests. REA’s United States History Builder reviews all United States history questions covered on standardized tests such as the AP U.S. History, CLEP, GRE History, and the SAT II: American History and Social Studies exams. Topics covered range from the Colonial period to Watergate, Carter, and the New Conservatism.