Better reserve a really big courtroom. Under your conspiracy theory, you'll also need to prosecute thousands of private religious hospitals, colleges, preschools, and universities that already receive taxpayer funding. Weird that you folks tend to raise no alarms about all that... Only in the realm of K-12 does this become "evil."

P.S. You should read U.S. Supreme Court's decision in Zelman v. Simmons-Harris. It might help you better grasp the issue before you make a comment like this again.