That cry is heard over and over. This is not "freedom of speech" issue. Creationism (and its retarded cousin, ID) and all other mythology can be discussed in the proper forum. It should no more be discussed in a science class than astrology in an astronomy class or alchemy in a physics class.
It is unAmerican, and it is plain and simply willful ignorance. Ignorance which the public education frauds are determined to impose on posterity, by hook or crook.
It is science. Willful Ignorance is the refusal to look at scientific evidence because it appears to violate a religious concept.
Look up the definition of science.
I do not think that it includes judges forbidding active debate about observable things.
Here is a head start for you below.
http://m-w.com/dictionary/science