Washington???
Washington state law on guns in schools from:
http://www.k12.wa.us/Safetycenter/Weapons/default.aspx
“Exemptions to state and federal prohibitions on possession of firearms are made for persons who are licensed by the state to carry a concealed pistol. The GFSZA provides an allowance for licensed persons to possess firearms within 1000 feet of a school, and state law allows those licensed to carry a concealed pistol to possess a firearm on school grounds while picking up or dropping off a student. State law prohibits loaded firearms inside school facilities except for security and law enforcement.”
I think the Washington applicant to the gun training may not know the law, or he may think it will be changed. One new representative has introduced legislation to do precisely that.