In rural communities, people were still bringing their hunting rifles to school (leaving them in their truck on the rack in the back window) up until and for some time after Columbine.

I even remember kids accidentally bringing their rifle maybe as late as 2001 or 2002. They were just asked to go home and drop it of, if anyone noticed.

I would wager that at those same schools today, a gun drawing or finger gesture of a gun would not get you expelled.