I think it's traumatic that the school bus has to have a no-guns sign on it!
Just remember, you're not losing a grandson, you're gaining an educated kindergartner!!!!
Ohio passed a Concealed Carry law a few years ago. Basically you can carry anywhere UNLESS it's a posted "No Carry Zone". There are some exceptions, but thats the Readers Digest version. So tio comply with the law, and leave no room for doubt, all school buses and schools are posted "No Carry Zones". And you're right, some dumass would say....."I didn't know I couldn't bring my gun on the bus/to school".
You are very correct on the "educated kindergartener", 2 days of school under his belt and I got the education last evening. He was telling me all about it.