Is teaching creationism in biology classes Constitutional?

[WillK]

I would think that that kind of preferencing also violates the Establishment Clause of the First Amendment.

I am particular  about the wording of the Constitution. 

The First Amendment places a restriction on the legislative authority of Congress.
If Congress passed a law about teaching creationism, I would say it was unconstitutional.
But I dont see how a local school board or some curriculum committee is covered by the First amendment, so I said it is Constitutional, though poor educational policy

[WillK]

I view it as a violation of the separation of church and state (while in and of itself isn't law), and a spread of false information. It's place is not in public education, and particularly not in science class.

Congress is establishing a religion?

The verb in the first amendment is respecting, not establishing.

[WillK]

Of course it is constitutional. The Constitution has no just authority over local schools.

Uh, no. Public schools are themselves unconstitutional; but as long as they exist (unconstitutionally), then it is also unconstitutional to teach Creationism in them.

How can they be unconstitutional when the Constitution of a state (lets say Illinois) specifically calls for their existence?