<p>If you skip courses you already know and have credit for, then you effectively gain free elective slots for other courses of interest (e.g. additional advanced courses, out-of-major interesting courses, etc.). Or (if you have enough skippable courses) even graduate early if you desire that (or reduce the risk of graduating late).</p>
<p>Better to do that than waste time and tuition boringly repeating what you already know. Also, many students do repeat their AP credit, blow it off “because they already know the material”, and do not get an A grade because they do not take it seriously, getting the worst of all worlds.</p>
<p>However, be aware that Math 1B does contain some introductory differential equations material that may not have been in your high school calculus course. If you skip Math 1B with a 5 on AP calculus BC, but have not had that introductory differential equations material, you need to self-study that material. You can find more information, and links to old Math 1A and 1B final exams to check your knowledge, in the <a href=“http://talk.collegeconfidential.com/university-california-berkeley/1305840-freshman-math-faq.html[/url]”>http://talk.collegeconfidential.com/university-california-berkeley/1305840-freshman-math-faq.html</a> .</p>