There are several great options in the Charlotte area. Most of our larger (K-12 private schools are located on the south side. This would include Providence Day, Charlotte Country Day and Charlotte Latin. If you're seeking a church-based school, our Catholic churches sponsor several large ones, including Charlotte Catholic and St Mark's. Many other churches have schools as well, of all shapes and theologies! In Concord, we have the Cannon School as the main private option.
For cost, you could spend anywhere from $700 per month to $1550 per month (for a 9 month school year). Bear in mind that many of the larger schools will have a requested 'donation' to the endowment upon enrollment.