“...I sent my kids to public school...”
Then you did not even follow your own advice. LOL.
As to private schooling, if one has a bunch of children, it is a ridiculously expensive proposition.
Your participation in government schooling acts as encouragement for other Christian parents to do the same. And many of them are NOT diligent about watching what their children are taught. Even if they are, they are still getting a poor education.
The country is wallowing in moral relativism, and children graduate from government schools with about a 90% conversion rate from Christianity to humanism, per the Barna surveys.
When Christians prey their heads out of their backsides, we’ll see things turn around in this country. Otherwise, we’re going to lose. And sooner than many expect.
At the time I did we were in a decent school district and monitored their progress.