So, maybe it was a strange way to start off this discussion in my head, with a fairy tale… but I think it shows a lot of my concerns about the current state of the Church in the States today.
But this is supposed to be a conversation- both sides of the issue battling it out in my head, in this blog (including the comments- I really do need other people's input to figure this out)- so that means we need some arguments for Christian Education as well as against it.  I'm planning on trying to dig some more up, but here's what I have so far, and I think that it will at least be a good start:
As Christians, we're to be the Salt of the Earth.  Salt is used to preserve and flavor food by being sprinkled or 
rubbed on food (or, as I learned yesterday, dissolved in water which the meat is then soaked in, called 
"brining"); for our purposes, the basic principle here is that the salt is everywhere- it permeates the meat.
The salt isn't concentrated- 
it permeates the meat evenly.
We should be doing that as well, as the Church.  We should be 
everywhere.
At first glance, then, it would seem that Christian Education is the exact opposite of this; it's a concentration of Christian kids and Christian teachers in certain schools, resulting in lowered concentrations of Christians in other schools- a dilution, if you will.  Christian Education seems just like a bubble from my fairy tale.
Here's an alternate theory: what if Christian schools aren't bubbles at all, but are actually saltshakers?  Saltshakers are concentrations of salt even higher than that found in meat which is treated with salt, but they are also far from unproductive.  They store salt until it is time for it to be used.
This alternate theory, then, is that Christian schools are saltshakers; they are for training and preparing Christian students to go out into the world and be the Salt of the Earth.
More on this in posts to come, but what do you think?  Are Christian schools, by nature, bubbles or saltshakers? Or does it depend of execution?  Can a Christian school choose whether to be a bubble or a saltshaker?  Do you have stories about one or the other kind of experience, or about being in a public school "diluted" by the existence of Christian schools?