Well isn't it odd that all the mass shooting in the US these days have happened in "gun free" zones
My ideal situation that wou have saved many childrens lives in conneticui is this. Have a Gun in every class room in a locked desk with an alarm on it that goes off when the key is entered in the key hole. Teachers are prepared to defend the kids and the alarm notifies the entire school a teacher is trying to acsess the Gun in their room. Computer in security office notifies which room.