Folks the statutory ban on guns on school grounds does not apply to colleges and universities, it does apply to a public or private elementary or secondary school. See statute below. However, most if not all colleges and universities in CT do ban guns on campus in their "student handbook". If your a student then it applies to you. What happens if as a student your caught with a gun on campus? That's usually spelled out in the student handbook. May be a simple expulsion from campus or they may call the police and let them deal with you. If the campus has a no guns sign then it does carry the weight/force of law and it applies to everyone. The gray area is if your not a student and there isn't any no guns sign. Expect at best to be asked to leave the campus, expect at worst to see a reaction similar to the Dong/UNH event where the campus is locked down and one gets arrested.
http://www.cga.ct.gov/current/pub/chap_952.htm#sec_53a-217b
Sec. 53a-217b. Possession of a weapon on school grounds: Class D felony. (a) A person is guilty of possession of a weapon on school grounds when, knowing that such person is not licensed or privileged to do so, such person possesses a firearm or deadly weapon, as defined in section 53a-3, (1) in or on the real property comprising a public or private elementary or secondary school, or (2) at a school-sponsored activity as defined in subsection (h) of section 10-233a.
(b) The provisions of subsection (a) of this section shall not apply to the otherwise lawful possession of a firearm (1) by a person for use in a program approved by school officials in or on such school property or at such school-sponsored activity, (2) by a person in accordance with an agreement entered into between school officials and such person or such person’s employer, (3) by a peace officer, as defined in subdivision (9) of section 53a-3, while engaged in the performance of such peace officer’s official duties, or (4) by a person while traversing such school property for the purpose of gaining access to public or private lands open to hunting or for other lawful purposes, provided such firearm is not loaded and the entry on such school property is permitted by the local or regional board of education.
(c) Possession of a weapon on school grounds is a class D felony.
Edit to add: As mentioned above certain state employees are prohibited from carrying at their place of employment on state property/grounds. Thank Mr. Roland for that.
http://www.ct.gov/opm/lib/opm/olr/wpv/exc16.pdf
And while there are certain select state sites and buildings that are gun free zones by by law, the state colleges and universities are not one of them unless your a state employee.