Im not denying that there are problems with integration. I'm not denying that some kids are forced into religion.
I'm saying that taking away the liberty to express your religion, won't change anything about that. All it does is appease people who are offended or threatened by religion (Islamophobia, anti semitism etc.).
A kid that is forced into religion won't become an atheist if it can't wear a headdress or a cross chain in school.
You have a very odd understanding of what "secular state" means. It doesn't mean that the state can dictate where or how you're allowed to express you religion. It doesn't mean that some parts of religion are to be tolerated, where as those that you see as bad can be forbidden at will.
All it means, is that the state institutions, can't force you to partake in a religion or activities related to that religion. Kids who voluntarily want to express their religion are free to do so. Whether that kid is forced into following that religion, is not an issue of a "secular state".