I think it's really sad that so many topics about snakes end up in arguements. I completely agree that education is key in helping to reduce fear related to things(and creatures) that we don't understand. It would be fantastic if there were charts depicting venomous/non-venomous snakes in all areas of the U.S.
The fact of the matter is, no matter where you are in U.S., only a very small percentage of the snakes you will enounter will pose a danger to you. Harmless snakes like Ratsnakes, Corn Snakes, Milk Snakes, Fox Snakes, Garter Snakes, Ringneck Snakes and a whole bunch of others are quite plentiful compared to venomous snakes. Now, I'm not saying people should go out and randomly grab any snake they see...you may encounter a potentially dangerous one. I'm saying that you should make a little effort to become familiar with the species common in your area so you KNOW what you are seeing when you come across one. It's easy to recognize species once you see them.
I understand not wanting your kids to be in danger...but to be frank, your chickens/dogs/cats can hurt your kids MUCH worse than most non-venomous snakes can. It sounds crazy but it's entirely true. I have scars on my arms/hands from my ducks' claws, my brother's dog bite, and pet cat bites. I have NO scars anywhere from snake bite, and I have been bitten by snakes as long as I am. Your children are exposed to these other animals daily, but snakes are considered a threat to be eliminated. If they are taught not to fear, but to respect snakes and not go close to ANY of them that they might see, you will have a much more harmonious relationship with the natural world that you live in.