That's why Cobb County has no leg to stand on. To single out the theory of evolution for a disclaimer that is not equally applied to the theory of gravity, the theory of infectious disease, the theory of relativity, etc. is facially sectarian.
Those can be observed.
Aaaah please! We have plenty of evidence for gravity, no one falls up. We have plenty of evidence for relativity, the atom bomb. We have plenty of experiments proving infections diseases. However, we do not hava any such proof for the theory of evolution. In fact, we have no proof at all.
Oh Steve. In the first minute of my 55-minute class, I will demonstrate experimentally the validity of "gravity." Then you can have 54 minutes to demonstrate that macroevolution occurs. Take as much time as you need. Need more time? An extra week, a month, several millenia? You get the point?
You can argue that you could demonstrate it, given enough time, but the fact is, you haven't, and neither has anyone else.
That's why you can't put "evolution" on the same level with "gravity."