I believe nearly every university requires proof of vaccination/immunity for a variety of standard immunizations for attendance. It's pretty standard. I don't know if it's some federal law, or just good public health practice.

Are you upset about this? I'm not sure why the anti-vaccination crowd isn't more upset about this -- but bite my tongue, I'm sure it'll be coming next.

You can always make a slippery slope argument, but public educational institutions seem like a pretty appropriate place to require vaccinations.

Then again, why not legislate that every kid period is vaccinated (unless health conditions prevent it), really, why not?