<p>I notice that there are several SAT Subject Tests have same title with AP Exam's, such as </p>
<p>World History
Biology
Chemistry
English Literature
US History
French/Spanish</p>
<p>I wonder these two tests are on same level or not. Is that true that taking SAT Subject Test after its corresponding honor class while taking AP Exam after AP corresponding class?</p>
<p>Or SAT Subject Test has totally different scope from AP Exam?</p>
<p>If one took SAT Subject Test after AP class, can the result reflect the student's ability without AP Exam?</p>
<p>Thanks a lot!</p>