Then reinvent the law, and make it legal nationwide, for principals to have guns, locked in a safe, and ready to use.I do agree with you. If these places were not gun free zones the shooters may not go in the first place. More gun free zones means more places for mass shootings. So again the new laws still do nothing.
PS: make it legal for the principal to take that gun home every night, so that crooks don’t burglarize the school.