How accurate is Wikipedia?
I don't know, but it gives a starting place for further investigation.
List of School shootings in the US from 1700 to present date -
http://en.wikipedia.org/wiki/List_of_school_shootings_in_the_United_States
List of "notable" US school attacks per Wikipedia -
http://en.wikipedia.org/wiki/List_of_school_shootings_in_the_United_States#List_of_notable_U.S._school_attacks
A friend reminded me that background checks began in 1998, I believe. It seems that since background check have begun, school shootings have increased. Do background checks actually accomplish anything worthwhile or useful other than creating more bureaucracy and the additional spending taxpayer money? The thought process on background checks, just like "public school education", seems to be the more it fails, the more money and resources get thrown at it as it continues to fail at an even higher pace.