So hard to decide... you might ask at the school about it. See if they have any future plans to move to another location (possible that they do). If so, you might be able to deal with it for a year or two. I am sure they will reassure you that it is not/will not be a problem (they have an interest in promoting this viewpoint, of course).
I will also say that at least in our state, guns are now EVERYWHERE. Concealed carry is a fact in most states now, and honestly your risk probably isn't any higher around the corner from a gun shop than at the grocery store or other public location or driving down the street (have been a couple of road rage with guns incidents in our community just in the past few months). That, of course, is a whole 'nuther topic. But in weighing the relative risk, it is something to consider.
