<p>Also this:</p>
<p><a href=“http://www.math.wustl.edu/~freiwald/ib.html[/url]”>http://www.math.wustl.edu/~freiwald/ib.html</a></p>
<p>International Baccalaureate Credit in Mathematics</p>
<p>A Mathematics score of 6 or 7 earns 3 units of credit for Math 131 (Calculus I) </p>
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<p>Clearly they only give credit for the higher level exams, and even then only for top scores. But they seem equally tough on AP, i.e. only scores of 5 get actual course credit, and 4s sometimes get elective credit.</p>