Per the developer’s comparison page (http://www.burnaware.com/compare-editions.html), the Professional edition has the same features as the Premium, plus two additional bullet items:
Burns ISO Image to multiple drives simultaneously
Usage in commercial organizations or with commercial purposes
Since the license for this offer states “for noncommercial use” then the only difference is that you can burn an ISO file to multiple drives. I would presume Educational use would be considered “noncommercial use,” so if you have multiple burner drives, this could be handy if you want to make a copy of the school play DVD for every member of the class.