Mother Jones lists 68 mass shootings since 1965 in gun free zones over 1,100 killed and wounded

Review of 33 incidents in gun free zones where armed self defense occured show only 82 killed and wounded

That means that the body count is 7 times higher in gun free zones where no armed self defense occurred

Now since concealed carry is no different than open carry, and has been legal in schools in 19 states and over 300 school districts for over 30 years with over 68 billion hours of students being exposed to 5% of teachers who like the population carry, surely you can post thousands of accidents, no, hundreds maybe, no.....why is that..