Incidentally...
None of the "influences" you mention have actually had any real effect on our public education system. Sure, there's groups pressuring school boards. They don't have much success. How many public school boards actually end up teaching creationism? Show me the public schools that use creationist science textbooks.
The number of homeschooled kids in this country has gone from something like 2 percent of all students in 1999 to 3 percent in 2007.
You may need to rework your theories to explain the numbers in the poll. Take another look at the numbers under "education level." Hell, look again at the political party numbers.
If you're going to represent the Age of Reason, start thinking.