The State of Tennessee v. John Thomas Scopes, commonly known as the Scopes trial or Scopes Monkey Trial, was an American legal case from July 10 to July 21, 1925, in which a high school teacher, John T. Scopes, was accused of violating the Butler Act, a Tennessee state law which outlawed the teaching of human evolution in public schools. The trial was deliberately staged in order to attract publicity to the small town of Dayton, Tennessee, where it was held. Scopes was unsure whether he had ever actually taught evolution, but he incriminated himself deliberately so the case could have a defendant. Scopes was represented by the American Civil Liberties Union, which had offered to defend anyone accused of violating the Butler Act in an effort to challenge the constitutionality of the law.
Scopes was found guilty and was fined $100 (equivalent to $1,850 in 2025), but the verdict was overturned on a technicality. William Jennings Bryan, a three-time presidential candidate and former secretary of state, argued for the prosecution, while famed labor and criminal lawyer Clarence Darrow served as the principal defense attorney for Scopes. The trial publicized the fundamentalist–modernist controversy, which set modernists, who believed evolution could be consistent with religion, against fundamentalists, who believed the word of God as revealed in the Bible took priority over all human knowledge. The case was thus seen both as a theological contest and as a trial on whether evolution should be taught in schools. The trial became a symbol of the larger social anxieties associated with the cultural changes and modernization that characterized the 1920s in the United States. It also served its purpose of drawing intense national publicity and highlighted the growing influence of mass media, having been covered by news outlets around the country and being the first trial in American history to be nationally broadcast by radio.
