What penalty should parents have to face for knowingly sending their COVID positive child to school?

I just read an article about a parent who had their child tested for COVID and knew the child had it and sent them to school. Because of this 28 students had to be sent home to be quarantined. Should parents face some sort of punishment for knowingly endangering other children or should the child just be suspended from school for a year?
I use to work in a daycare and I will say those types of parents were always my most hated parents. The ones that would drop off their little ones with the flu and before long the whole daycare would have the flu running around for weeks and many daycare workers would get sick. But no sweat to mom or dad. They could care less that their child was sick and miserable or that they could infect children who may have immune problems.
So back to my main question. How do schools and daycare get it across to parents that this type of selfish behavior won’t be tolerated?