Thanks all; actually I was only trying to find out the law in Washington about going to public schools if your child is not vaccinated. Instead this conversation turned slightly from the original requested info. Oh well, this has been very insightful. I have learned a lot.
"strumpett's child best not leave the US if not vaccinated"
If we leave the US we will be vaccinated. We are not stupid. One of my goals would be to live in a foreign country with my children for up to one year at some point. This, of course is a future goal.
Once again, thanks for all the info. It has really helped.