LRS 14:95.2. Carrying a firearm, or dangerous weapon, by a student or nonstudent on school property, at school-sponsored functions or firearm-free zone
(5) Any constitutionally protected activity which cannot be regulated by the state, such as a firearm contained entirely within a motor vehicle.
You are allowed to bring a weapon on a school campus as long as it stays in your vehicle. Don't let going to your childrens school keep you from carrying. Just lock it up in your vehicle before you got out.
This.