The best way to practice for SAT Subject Tests™ in HistoryEvery year nearly 120,000 students take a SAT Subject Test in U.S. History or World History. The Official SAT Subject Tests Study Guide: For U.S. History and World History is the only source of official questions and answer explanations for these exams, and it is the only guide developed by the test maker. In addition to two full-length, previously administered practice tests in each subject, the guide also contains complete solutions, answer explanations and test-taking strategies.