Tammy Kitzmiller, et al. v. Dover Area School District, et al. (400 F. Supp. 2d 707, Docket No. 4cv2688) was the first direct challenge brought in the United States federal courts testing a public school district policy that required the teaching of intelligent design. In October 2004, the Dover Area School District of York County, Pennsylvania, changed its biology teaching curriculum to require that intelligent design be presented as an alternative to evolution theory, and that Of Pandas and People, a textbook advocating intelligent design, was to be used as a reference book. The prominence of this textbook during the trial was such that the case is sometimes referred to as the Dover Panda Trial, a name which deliberately recalls the infamous Scopes Monkey Trial in Tennessee, 80 years earlier. The plaintiffs successfully argued that intelligent design is a form of creationism, and that the school board policy violated the Establishment Clause of the First Amendment to the United States Constitution. The judge's decision sparked considerable response from both supporters and critics.