I've seen some, unscientific, surveys on what students think about the bibly coming into the school to be studied. The vast majority of non religious (students' choice) don't care. The majority of students openly identifying as Christian don't want it, they get enough on weekends. Sounds like all kids in general.
Here in the UK all schools have Collective Worship. I'm nut sure if it make us any more religious. Pretty sure that if you want to eliminate religion inside a Generation a good start would be to issue every kid with a bible and force them to read it cover to cover.