I'm curious how this would work in RI since RI has two carry permits - town and Attorney General. Town permits are issued by:
http://webserver.rilin.state.ri.us/Statutes/title11/11-47/11-47-2.HTM
Well, first thing to check is if RI bans carry in K-12 schools, if they do the entire question is pretty much moot.
-Mike