Is teaching creationism in biology classes Constitutional?

[ag]

Would teaching of Lamarckism be constitutional?

Or would teaching this be constitutional (I know, some people will have fun here):

http://en.wikipedia.org/wiki/New_Chronology_(Fomenko)

Probably, yes. It's just that if it ever gets into a school program, I would be highly suspicious of the overall educational quality in that school. So, I'd conjecture, would most university professors anywhere, as would many admissions committees