<p>The ACT is probably their main competitor. I wouldn’t go as far to call it a 100% monopoly (maybe a duopoly haha), it just depends on what perspective you take. This is an interesting read: [Paly</a> Voice: College Board monopoly contradicts American ideals](<a href=“http://voice.paly.net/view_story.php?id=3305]Paly”>http://voice.paly.net/view_story.php?id=3305)</p>