Reading the Idaho law, I see a prohibition against carrying on the grounds of a private or public school. I see private school defined elsewhere in the law as K-12 (of various sorts) and see no definition of private school.
Is it OK for a non-student/non-staff to carry concealed (with proper permit) on a college campus in Idaho? You know, for the times a non-student wants to visit their library or some such? Sure seems like it.