I voted no because of the ridiculous thread title.
The only one responsible for school shootings are the criminals who perform the heinous act.
School boards are typically elected to represent the people, and while they have a responsibility to provide a safe environment, they aren't typically experts in this area. Holding them criminally liable makes no sense unless they did something absolutely negligent, which current laws would seem to support.
I expect school boards to focus on giving our children the best education possible. That's how I vote, and that is probably what motivates most school board members to run. They aren't security experts.
School boards need to partner with security experts and law enforcement. I suspect most do.
Perhaps the best way to address this issue, instead of a gun grab by Dems, would be to have legislatures pass laws which define a minimum level of security for all schools. It's a very difficult issue, as we shouldn't restrict the rights of all of the good people just because there are some very rotten apples among us.
We can't blame school boards for the actions of the perps who target schools.