Good point. I meant "free market" to include not paying taxes to support a government system, whether or not one uses the system. Sort of like a "free market" for retirement pensions would not have mandatory contributions to Social Security, in addition to which one can privately save for retirement. WE can get rid of the part that doesn't work (the government system) to free up resources for the part that does work (the private system).
There's a free market for education today. No one HAS to attend the government school.
These two statements don't hold up. First, government schools are not a free market, and should be. They are monopolized by the Secular Humanists and Atheists, and defended as their turf.
Second, talk to the working poor about HAVING to attend the government school! They have little choice, and the monopolists (who pretend to be such choicers) don't even want them to be able to move or compete within the local government schools in their own school district, let alone compete across districts, or with private schools.
But.........
EVERYone HAS to PAY FOR the government school!