P.B.
just something to think about- my mom put me in private school being a single mom (who NEVER received child support for neither my brother or i) and making HALF of what you make. she was also very smart with her money and spent it well, not carelessly. so, it's not about the income you have but about how you manage the money you have. we lived in fairfax county, then too... and she sent me to Browne Academy- NOT CHEAP!
and there are some fantastic public schools -especially in fairfax county- just check them out, they are not all the same.