Read the 1st Amendment.  It restricts the government 1) from making laws to either establish a religion or prevent some other entity/person from establishing a religion; and 2) from restricting people from practicing their religion.

There is no restriction on the government to provide taxpayer funds to religious entities or to even do so unevenly, discriminating in favor of one over another.  It's good that the government finances, say, Jewish schools, over, say Satanic cults.  That is not an establishment of religion; it forces no one to become Jewish nor does it stop people from becoming Satanists or practicing Satanism.

People's perception of the Constitution has been tainted by liberals in the Court.  The Court has increased its power beyond what was ever intended.  That's why a conservative President with the power to change the make-up of the Court is going to be very important to returning the balance of powers between the 3 branches.