These would include the Santa Fe Community Convention Center and its underground garage (including personal vehicles, presumably), public libraries in the city, any facility -- public or private -- that students may visit to participate in school activities, and any facility -- public or private -- where Santa Fe Public School interns could be placed, including City Hall.
According to the resolution's preamble, anti-gun Mayor Alan Webber and gun control supporters on the Council are relying on an expansive interpretation of the state definition of school premises in New Mexico state law that includes "any.... public buildings or grounds, including playing fields and parking areas that are not public school property, in or on which public school-related and sanctioned activities are being performed."