SAT Subject Test U.S. History Prep Book

<p>My son goes to a school that doesn’t offer AP classes, and he probably will be the only one in his grade who takes any SAT subject matter tests. He took U.S. history class, but it will be useless for the test, as nothing on the practice test was covered in his class. I will get him Essential Content, etc., as recommended here, but has anyone else here taken the test without a U.S. history class (or one at such a low level), and how much studying did you do? Any other suggestions? (No good picking another subject, would be even harder to learn chemistry or math on his own or even with tutor)</p>