The 1000' rule is Federal law. It applies to everyone that does not have a license issued by the state in which the school is located.
That's a detail of which I was unaware until this topic. It would be difficult to enforce in any meaningful way and how many people would ever have a reason to know they were in violation?
Yet another gift given by a bad law that should not have existed in the first place, much less been resurrected after the first version was nixed.