<p>Also I know people who take AP exams in the 8th and 9th grade. The most popular exam is calculus. </p>
<p>For IB everything must be done in the 11th and 12th grade. </p>
<p>For AP its by ability regardless of age. This is not true for IB.</p>
<p>Also I know people who take AP exams in the 8th and 9th grade. The most popular exam is calculus. </p>
<p>For IB everything must be done in the 11th and 12th grade. </p>
<p>For AP its by ability regardless of age. This is not true for IB.</p>