I've been a high school teacher for 17 years and an NRA certified Instructor for more time than that. I spent the last nine years in the inner city. This action by the students was at the very least, felony stupid.
Look, the kids know the score. The police officer at my school was jumped yesterday and beaten senseless, probably by an MS13 gang member. Introducing a firearm into an open and unsecured enviroment like that parking lot is a guaranteed recipe for trouble from every direction. They could just as easily gone around the block and out of sight.