As long as someone is old enough and has a concealed weapon permit, they should be allowed to carry on campus.
I'm sure the outcome would have been quite different had just a handful of students been armed that day
First of all, I believe that students should be able to carry concealed, But.....
Lets be a little realistic here, there should be some significant training requirements, and not just the standard CCW training. We are not the norm for college students. I work in a college town, and wouldn't trust 3/4 of the students with a rubber band gun.
Being able to wear a handgun, and being able to effectively use a handgun are completely different. Although I believe it's should be every law abiding citizens right to carry, I don't believe that everyone should carry.
I do believe that students and teachers armed and trained would deter a significant amount of these school shooting. I'll even go one better, a well armed and trained society in general will go a long way in reducing violent crime. (Just an opinion)
My problem is not with a student carrying, but with the knowledge that most would not seek adequate training, and fewer still will continue to keep proficient. I know this argument could be made in general regarding most firearm carriers, even police officers.
Regarding the post that firearms should be allowed to be stored on campus in the students vehicles, I strongly disagree. It would not take long before most of these guns were stolen and used by criminals. Easier than robbing a pawn shop. I would rather have the students carry on thier person.