The warning comes a day after Professor Jerry Peterson said he plans to cancel class if he ever learns any of his students are carrying firearms.
According to the Boulder Daily Camera, DiStefano warned Tuesday that any faculty members who do so will be in violation of their contracts and could face disciplinary action.
The Colorado Supreme Court has ruled that students with conceal-carry permits are allowed to bring guns into classrooms and labs.
Peterson said Tuesday he still stands by his classroom policy because a student with a gun would be a classroom distraction.
(Copyright 2012 by The Associated Press. All Rights Reserved.)