In the spirit of reviving the thread, I noticed some of my ATF numbers were off on pistol manufacturing numbers was off due to misinterpretation on a much earlier post when this thread was just started. I'm sure the crew has combed over the numbers and corrected them.
There are some additional useful resources, however. Now with all the school shootings, we have the following data which shows school violence (assault, aggravated assault, theft, rape, sexual assault, etc) have been steadily going down since they kept records. Gun-related school deaths, while disturbing, are also very low historically. NOAA shows for many of those years, lightning strike deaths exceeded those of school shootings. Schools are some of the safest places in America, despite fearmongering from either side that armed guards are needed or that guns need to be banned. The following are government figures:
Table 1.2. Number of school-associated violent deaths of students, staff, and nonstudents, by type: School years 1992–93 to 2009–10
https://nces.ed.gov/programs/crimeindicators/crimeindicators2011/tables/table_01_2.asp
Table 2.1. Number of nonfatal victimizations against students ages 12–18 and rate of victimizations per 1,000 students, by type of victimization, location, and year: 1992–2010
https://nces.ed.gov/programs/crimeindicators/crimeindicators2011/tables/table_02_1.asp
Percentage of schools with various security measures, by school control and selected characteristics: 2007-08
:
https://nces.ed.gov/programs/digest/d11/tables/dt11_168.asp
The violent crime rate per 100,000 residents in 1992 was 758. In 2012, it's 386. It's been steadily dropping, right through the 1994-2004 assault weapons ban without any deviation. Not just gun crime, but rapes, robberies, assaults, property crime, and car thefts.
http://www.fbi.gov/about-us/cjis/ucr/crime-in-the-u.s/2011/crime-in-the-u.s.-2011/tables/table-1
Someone on the forum also posted links to several government-funded studies that showed no useful or measurable differences were made by the AWB. Unfortunately my Google-Fu is weak but perhaps someone will come along and repost them or I can dig it up in the meantime, or you've uncovered those already.