If we lived in a large city, that would be true. In our small and extremely Liberal county, the name of the game is "How do we parents keep our children out of public school."
As a result, parents band together for school options. At our Christian school, we have students from all denominations and the prayer services are led by everyone from the Baptist minister to the Catholic priest.
Before the Christian school was available, we sent our kids to a secular private "Co-Op School" where we parents owned the lease on the building and we owned the teacher's contracts. Our Christian school has the same arrangement.
The student in question was a classmate from the secular co-op school. The parents now have to decide how to keep their child out of public school as the co-op school only goes to 5th grade and we go to 7th grade with plans to go to 8th. We are an option to public school.
If you are surprised that an atheist would send their child to a Christian school, you would be floored that one of our Jewish friends is sending her kid to a one teacher, Christian based private elemenary school in town as an alternative to public school. (He played a shepherd in the Nativity play last Christmas. Oy vey!). Last night, she dropped over and was discussion our school as a possible alternative for middle school.
Aversion to public schools makes for strange bed-fellows.