Actually, MYSY, Ohio law did change recently with respect to concealed carry on campus grounds (though not in buildings as you mentioned). Concealed carry on the property of an institution of higher learning that does not allow concealed carry by adopting a rule or policy now carries a tiered penalty. As I understand it, this is the new penalty structure:
If you are caught carrying a concealed handgun and have a CHL, and have not been found or plead guilty of carrying a concealed handgun before (for any reason, not just a college campus), it is a minor misdemeanor.
If you have been found or plead guilty of carrying a concealed handgun once before, it is an M4.
If twice before, it is an M3.
Then if that wasn't complicated enough, it gets better: If 3 times before, *or* you've been convicted of or pleaded guilty to *any* offense of violence and if the weapon involved is a loaded firearm (or you have ammunition ready at hand) or if the weapon involved is a dangerous ordnance, it is an M2.
Clear as mud? Yeah.
Here's how that works in Ohio law:
First, look to ORC 2923.126 which says in section (B)(5):
http://codes.ohio.gov/orc/2923.126" onclick="window.open(this.href);return false;
(5) Any premises owned or leased by any public or private college, university, or other institution of higher education, unless the handgun is in a locked motor vehicle or the licensee is in the immediate process of placing the handgun in a locked motor vehicle or unless the licensee is carrying the concealed handgun pursuant to a written policy, rule, or other authorization that is adopted by the institution's board of trustees or other governing body and that authorizes specific individuals or classes of individuals to carry a concealed handgun on the premises;
Then in ORC 2923.12 (F)(7) it lays out the penalties:
http://codes.ohio.gov/orc/2923.12" onclick="window.open(this.href);return false;
(7) If a person being arrested for a violation of division (A)(2) of this section is knowingly in a place described in division (B)(5) of section 2923.126 of the Revised Code and is not authorized to carry a handgun or have a handgun concealed on the person's person or concealed ready at hand under that division, the penalty shall be as follows:
(a) Except as otherwise provided in this division, if the person produces a valid concealed handgun license within ten days after the arrest and has not previously been convicted or pleaded guilty to a violation of division (A)(2) of this section, the person is guilty of a minor misdemeanor;
(b) Except as otherwise provided in this division, if the person has previously been convicted of or pleaded guilty to a violation of division (A)(2) of this section, the person is guilty of a misdemeanor of the fourth degree;
(c) Except as otherwise provided in this division, if the person has previously been convicted of or pleaded guilty to two violations of division (A)(2) of this section, the person is guilty of a misdemeanor of the third degree;
(d) Except as otherwise provided in this division, if the person has previously been convicted of or pleaded guilty to three or more violations of division (A)(2) of this section, or convicted of or pleaded guilty to any offense of violence, if the weapon involved is a firearm that is either loaded or for which the offender has ammunition ready at hand, or if the weapon involved is a dangerous ordnance, the person is guilty of a misdemeanor of the second degree.