This was written by a local hs mom. It caught my eye because it discusses being in the world but not of the world. Here's the first paragraph:
By withdrawing from the larger culture, homeschoolers aid and abet the culture’s failings—or so, at least, the charge goes. Christians have a responsibility to be not “of the world,” but, we are told, they also have a responsibility to be “in the world.” And therefore it’s our duty to send our children to public school. After all, Jesus calls us to be the salt of the earth and the light of the world, and how can we possibly be those things if we stay at home all day?
I was unexpectedly bombarded with almost these exact comments in my Sunday School class last year, so I was interested to hear what the author said in response to those comments.