No, true.
I know this because my parents were completely against innoculations, and I was an opt-out kid until I got measles (from a illegal immigrant kid, no less) and my parents changed their tune.
The form (available from the nurse, and was notarized by the school secretary) had a check box that said "matter of concience" or "medical" and had check boxes for each innoculation you didn't want.
That was it.
It's not a big deal.
And yes, we had to do it several times, probably every couple of years.
Without being offensive, I doubt that was recently.
At least 3 threads are running on the subject, and links leading to the criteria for opting out have been posted as well.
Things change. It USED to be that easy, but it no longer is.
I wish it were
If you have any concrete evidence it IS as easy as you claim, please post it.