From another "secularists" perspective...
I wouldn't say it's a
problem, but there's not much tolerance for non-Christians in my hometown. Because being a Christian is the ONLY right way to live, if you aren't one then you are treated like a second class citizen
to an extent by a very vocal minority of people.
There's not a lot of outright ugliness or name calling (a little sometimes), but when you tell people you aren't a Christian, there's an instant chill in the air. These are usually the same people who think it's OK to say the N word in the grocery store, bank, etc. (or anywhere for that matter).
I have been told I'm going to hell, my child is going to hell because I don't take her to church, I'm a Communist, etc. I'm also a Democrat, so I automatically have two strikes against me. I'm just a ***** of Satan to some, even though I don't even believe in Satan.
I don't know about Desoto county, but the teachers do try to inject religion into the classroom here. They can be pretty subtle about it and I've kept my mouth shut because it hasn't been overt. My child is free to make up her mind about her spiritual path when she's old enough to really understand her options. I don't need anyone else trying to sway an innocent child with scary stories of going to Hell if you don't believe.
This is just my experience from the other side. Most people are pretty friendly on the surface, but don't expect to form any deep lifelong friendships unless you come across an open minded Christian who will overlook your lack of religion -- or a like minded heathen

. The truly devout closed-minded folks think their souls are in danger if they consort with non-believers. Of course, most of them homeschool or church school, so you won't likely run into a whole lot of them in your social circle.
I hate to be so cynical about this, but my experience has not been that good in the small town where I grew up. Differences are not tolerated very well.
My social circle is very small, but I'm ok with that even though it can be boring at times. The friends I do have are either similar in beliefs to myself, or really do have a live and let live attitude. I don't care what anyone's religion is as long as they treat their fellow humans with compassion and kindness and don't push an agenda on anyone else. Worship as you please, but leave me out of it.
As for daycare...talk to the center directors and ask if there is any religion or prayer in the daily schedule. If they say yes, just move on to the next one. Get the yellow pages and start making calls now.