You lost me what part of DEADLY WEAPON excludes rifles. You can not carry a gun into a K-12 school period. Unless your a police officer or are authorized by the school to do so.

Back when colorado was a may issue state if you had a permit you could in fact carry your gun on school grounds. I had a permit back then however when they wrote the new shall issue law they made it illegal to carry a handgun on school grounds period.

You can enter school grounds with a permit carrying concealed as long as you do not exit your vehicle. If you exit your vehicle you must leave your gun locked inside your vehicle.