morethan your question about a child of atheists who finds faith says a lot about you. Most atheists operate on a principle of respecting the beliefs of others whilst not sharing them. Too many people of faith think of atheists as all being like Richard Dawkins, who has essentially turned atheism into a faith - which is missing the point entirely.
Speaking for myself, all I want is for my lack of faith to be considered just as valuable and morally worthwhile as another's faith.
Religion in schools is a contentious issue precisely because schools get it wrong so often. My DD1's RE teacher recently threatened her with a Gross Misconduct charge because she questioned the existence of God in her classroom - and no, she was not insolent or cheeky about it. The teacher, in response to a question about the Big Bang, said that something would have caused it, so why not God? So DD asked her 'then what caused God?' and boom! Threatened misconduct if she continued to ask questioned. The only reason I didn't make an issue of it it that DD didn't want me to. This same teacher often gets evangelising Christian speakers in, but never any representatives of other faiths. Obviously the school is also at fault for letting her do it, but it just goes to show what a hot potato it is.