Brenda Brenda:
I have kinda mixed feelings about this story...
First off, despite the fact of your non-religion, why would you not let your child attend the RE classes? Education, even on topics you don't believe in, is always an addition. I cannot understand why this child didn't attend the classes, and the school was okay with that.
Second, as a school, you cannot exclude children from any activity.
Religion classes are dogma - They teach what children MUST believe.
My child would never go to a class like that. Study world religions, yes ... but not to be told what to believe. No class where the right answer on a test might be "It was a virgin birth".
It was petty of the school to punish the child and it speaks to their rigid religious dogma.
Was it a religeous school? I don't think so. So they cannot teach your kid what it MUST believe. Religion classes should be about world religion, unless you go to a religious school.