As I said, I've been here for a decade now, and I work for a big company with great perks. It's been good for me, but now that I have a kid, the school-shootings thing is getting more and more worrisome. There's literally nothing I can do to prevent some moron raiding his mother's arsenal and killing my kid if that's how he wants to end his life.
Why this obsession with school shootings? You do realize your kid is far more likely to be murdered outside of school than in school? "Homicide is the second leading cause of death among youth aged 5-18. Data from this study indicate that between 1% and 2% of these deaths happen on school grounds or on the way to or from school." So 98%-99% of homicides of school-aged children happen outside of school. i.e. The place where your kids are safest by far from being shot or killed is in school.
If you look at the chart in the above link, on average fewer than 20 students are murdered each year in school shootings. If you look at causes of death, among 5-14 year olds (page 2), the #15 cause of death kills 18 per year, indicating school shootings doesn't even rank in the top 15. For age 15-24 (high school-college), the #15 cause kills 99 per year, so school shootings probably doesn't even make the top 20 or 30. By far the #1 killer of student-aged children is accidents - outnumbering homicides by nearly an order of magnitude, and school shootings by two orders of magnitude.
It's the media which has a morbid obsession with school shootings, causing them to devote wildly disproportionate amounts of coverage to it relative to other dangers and risks faced by school-aged children. Don't buy into it. Parents' fear of school shootings is completely irrational, just like fear of flying (which is also fed by the media's disproportionate coverage of plane crashes), or child abduction by a stranger (which is the rarest form of kidnapping, and also fed by the media's... well you get the picture).