It's the scientific community that decides what goes into science class, not the church. The reason science is taught at all is because it wields results, if it was just "thinking" like usual, then how come the church (that is supposed to know the "truth") didn't make those kind of progresses all those centuries when their dogma was taught at school?
If you think the scientific community is wrong, there's an easy way to prove it, set up your own scientific community with your church and get better results, then you will be able to replace science class with your brand of "science". It's obvious that your idea of science is different from that of the scientific community.
It's amazing that when creationists are asked to do the work, the only thing they seem able to do is whining and find excuses why don't want to actually do the work scientists have when they want to be recognized. If Einstein, Lemaitre, Bohr and the like had reacted this way when their theories were first rejected, they wouldn't have gone far. They didn't go to court and tried to convince an ignorant public through churches, they just kept on working and that's the difference between actual scientists and creationists.