<p>
</p>
<p>Placement exams in junior high/high school I attended were all timed for students at all levels. Sometimes much more tightly than the actual final exam itself. </p>
<p>Moreover, if such a request had been made at any high school I knew of…especially the one I attended back in the early-mid '90s, the teachers/admins would reply that if a given student cannot cope with taking timed exams in AP classes, they have no business taking such classes. </p>
<p>Only concession that would be given is extra time if a student has documented disabilities…but they’d never give untimed exams.</p>