http://www.nraila.org/Legislation/Read.aspx?ID=6976Virginia: State Colleges Do Not Have the Authority to Ban Concealed Carry on Campus According to Attorney General Ken Cuccinelli
In response to a question posed by state Senator Emmett Hanger (R- Mount Solon), Attorney General Ken Cuccinelli recently issued an opinion stating that state universities and colleges - such as the University of Virginia - do not have the legal authority to prohibit permit holders from carrying a concealed firearm for self-defense. With his opinion found here, the Attorney General explains that where permit holders are lawfully allowed to carry may only be prohibited by law, not school policy. AG Cuccinelli did however state that bans on open carrying may still be enforced based on trespassing laws.
Consistent with his recent opinion stating that self-defense is a valid reason for permit holders to carry in church, this most recent action enforces the fact that state agencies, such as public universities, do not have the authority to establish “policy” in direct violation of state law. Virginia does not expressly prohibit permit holders from carrying concealed for self-defense on university or college campuses.
While this opinion is good news for permit holders, the university or college still has authority over students and staff and actions could be taken to expel students or fire staff, should they violate the school’s policy. Should the school want to make their policy law, they would then be forced to go through the complete administrative process to have an official regulation added to the Virginia Administrative Code.
So it can be an administrative rule and if caught they can ask you to leave and take adminstrative action such as expulsion, but you can't be criminally charged. Since concealed means
C-O-N-C-E-A-L-E-Dthen if I were a student I would carry a Ruger LCP or similar gun.