Dr. Rita Calvin seemed to brag on her school's campus security plan, and how it was put into play.
Even after the shooting, Calvin seems to express confidence having one unarmed security guard on campus, and a lock down procedure, were sufficient to keep things in check in an emergency until police could arrive.
And despite Oregon law allowing concealed carry on public college campuses, schools have great leeway in how they interpret the law. The college president specifically says Umpqua has a "no guns on campus" policy (aprox 4:40 on the news conf timeline).
From the Umpqua student code of conduct:
The following actions and/or behaviors are the types of misconduct for which students may be subject to disciplinary action....
...possession or use, without written authorization, of firearms, explosives, dangerous chemicals, substances, or any other weapons or destructive devices that are designed to or readily capable of causing physical injury, on College premises, at College-sponsored or supervised functions or at functions sponsored or participated in by the College.
How many who normally conceal carry in other places would be reluctant to go through whatever additional process the school may have in place, knowing it might target them for possible retribution by instructors or administrators who possess an anti-gun bias?
That is, assuming there is a process.
The college president makes it sound like there is none.