Thought there might be some interest in reading the response to this question:
Am I hurting my local public schools�and hurting America�by sending my kids to expensive private schools?
http://www.slate.com/id/2215051Homeschooling isn't mentioned but I thought the answers were applicable to it too.
My role as a concerned citizen�supporting the importance of public schools in my community and across the country�did not trump my responsibility as a parent to make the best decisions I could for my family and my children given the information I had at hand about their needs and the services available.