Yeah, my friends who are parents aren't exactly happy about the rule, but on the other hand they aren't happy when other kids come to school with a virus. And the schools will send the kids home. Parents are forced to take a lot of kid sick days (I used to share an office with a guy who had to spend at least one day a week at home with sick kids, every week from January to April. Drove him nuts.) Some people work from home when their children are sick, even though that's not strictly legal... but their employers aren't going to report them.