In June of 2022, the Supreme Court in NYSRPA v. Bruen held that the right to carry a firearm extends outside the home, with limited exceptions that are unlikely to apply to college campuses.
There are three different forms of campus carry laws that states enact: mandatory, institutional, or non-permissive.
Mandatory refers to a law or court decision which requires a publicly funded institution to generally allow firearms on campus, though some locations may be exempted depending on the school policy (e.g. in a secure area, or at a sporting event).
The majority of institutions in these states opt to ban guns with a few exceptions (e.g. Liberty University).
Non-permissive refers to the prohibition of firearms on any institutional property by law, with limited exceptions.