Catholic schools teach and accept evolution. They are free to do whatever Catholic parents want. Yet it seems that most everyone in Catholic school is happy learning evolution; which is good, because it is something of use that the Free Market desires.
Numerous private secular schools also teach evolution.
How are you not going to end up with students who know evolution, when the #1 non public school out there (Catholic schools) is teaching evolution, and many of the private schools are also teaching it?
Consumer Sovereignty indeed! Enough people want their kids educated in actual science, not biblical apologetics, that the Free Market provides a PLENTIFUL supply of schools to meet that demand.
Do you think Catholics and Catholic schools are destined to be outbred and eliminated?
Sure, for awhile. Like I said, it will take a few generations.
But, the moment you abolish Government Schooling and give Creationist Parents their money back, you've got something like 55% of Americans willing and able to pay for Creationist schooling.
That creates an enormous shift in educational demand, in favor of Creationism, on Day One. Continued Creationist numerical superiority in child-bearing will continue to reinforce those trends over time.
I'm unconcerned about the results. Given the vast numbers of Parents who want their children educated in Creationism, the market for Creationist education will grow, and the market for Evolutionist education will shrink.
Subsidize something (Evolutionism), and you will get more of it.
Eliminate the subsidy, and you will get less of it.
This really is Basic Economics.