If enough parents don't sign then the schools will have to ensure kids can use normal facilities as they should - or parents will not be able to sent their kids to the school, and that will force homeschooling to be lawful.
They can't get away with this, and I wouldn't let them take my kids where I wasn't allowed to go. I have the primary responsibility for their safety, and cannot lawfully abandon it so the schools can indoctrinate my kids. It's just a fact that I am the parent, and cannot fail to be responsible for my personal family, therefore I must have the authority to go where my kids go.
Thanks!
Check my comment, if you are intrested.