That's good.
I will still rail against public schools. They have become dens of iniquity, that advocate socialism, anti-Americanism, homosexuality, and atheism. I am glad on the individual level that there are deeply religious, and conservative staff members in these areas. They can be salt and lights in this dark world. God bless them. I hope your's and these other folks Bible studies with their students are very fruitful.
That said, schools should be privatized. The public/government system has degenerated to the point that they are a detriment rather than a benefit.
How many years was Adam Lanza home schooled? It sounds like it was just one. Adam Lanza was a product of his insanity, but if you are trying to attribute it to his school background - he was more of a product of the public school system (K through 10th Grade), than home school (1 or 2 years).