Who is that Brad Johnson charcter whose comment muddied up the whole thing by being on point, focusing on facts, and exposing the stupidity of the other commenters? Even worse, he suggests that the kiddies be taught personal responsibility. Somebody needs to hunt him down and silence him before those ideas spread.
SB1857 puts in place a certification for handgun instructors to teach school safety. I guess that implies that school personnel can be instructed in school safety, and will stipulate that teachers are school personnel. I could not find anything that says schools can allow teachers to carry at school, (I'm guessing that the plan is that once they get their gun inside the various laws on self defense, defense of others, and protection of property come into play.) But there's got to be authorization for them to bring their guns to work if for no other reason that getting past the federal GFSZ shinola.
stay safe.