Untill you are forcing people who don't want to use guns. To use guns. And some of them will stand on religious reasons
In a multi-cultural, multi-religious society you have to allow exemptions for reasons such as religion and conscience. And to be honest, I have no idea how different religions view guns.
For example, Quakers are famously pacifist. Do they object to hunting? And do
vegetarian Quakers object to trap and skeet, or marksmanship competitions?
And some Amish groups are well known for eschewing modern technology. How do they feel about semi-automatic firearms? What about laser sights? Or do their beliefs mandate black-powder arms only?
Can Orthodox Jews go shooting on Sabbath? Have to ask Tez. It might be a problem since a lot of matches are scheduled on Saturdays.
And as far as Christians in general ...I know a number of very devout Christians who are really into guns, and a few others who are pacifists. Different denominations I guess.
Anyway, I don't think anybody would ever propose
forcing people to do go against their conscience in a public school in this country. I could give you a lot of examples from the right not to say the Pledge of Allegiance to no longer requiring animal dissections in biology classes. In the few schools where that valuable activity is still offered, students may opt out and demonstrate the required anatomical knowledge on a computer program.
Hmmm. Don't like guns, maybe you could opt to show essential knowledge of their function and safe operation on a virtual program? That could work as long as the rest of the kids get to actually shoot ...at least an air rifle,
for the love of Heaven.
There, see how nicely I brought myself back on topic.