As an olde, this is one I wish I could go back and do over again. I, like you, didn't see the need to pay for private school when there was a good free option available to me.
As a Christian parent, I did not realize how much school influenced my kids. If I had it to do over again, I would have sacrificed a lot of 'wants' to put my kids through private Christian school or home school them. This and not having more kids is my two biggest regrets in life when I look back.
Having said that, i have family in education in south Georgia. They swear up and down that their schools are not the moral abyss that schools in other areas are but still, I'd rather have no regrets than give my kids over to the government who in large part is trying to destroy/ridicule all the values and moral truths that I want to pass along to the next generation.
My two cents.
Go Dawgs!
Go Army!