As they should.
I agree with it too; all it takes is one unvaccinated kid to end up getting sick off of something they picked up and then it not only exposes the other kids, but also ends up setting up the school to be sued by the parent of the sick kid, if the unvaccinated kid gets sick.
No, they shouldn’t, not if they don’t want to. Let’s assume your children are vaccinated. What harm does it do them then if other children are not? It does no harm. Laws should not force us to vaccinate our children or make them wear rain coats and over shoes, which would fall in the same category. Some children not being vaccinated will not harm the ones who are. Stop the frickin’ nanny state crap.