Last year, 42% didn&#x27;t: <a href="http:&#x2F;&#x2F;www.totalregistration.net&#x2F;AP-Exam-Registration-Service&#x2F;2015-AP-Exam-Score-Distributions.php" rel="nofollow">http:&#x2F;&#x2F;www.totalregistration.net&#x2F;AP-Exam-Registration-Servic...</a>