The primary debate in the Scopes Trial was whether a public school teacher could legally teach evolution, but the deeper conflict was between scientific education and religious authority in American public life. The 1925 case, formally known as State of Tennessee v. Scopes, put a young science teacher named John Scopes on trial for violating a Tennessee law that made it illegal to teach “any theory which denies the story of the Divine creation of man as taught in the Bible and to teach instead that man is descended from a lower order of animals.” What played out over eight days in a Dayton, Tennessee courtroom became a proxy war over the role of religion in government, the limits of majority rule, and the meaning of academic freedom.
The Law That Started It
Tennessee’s Butler Act, passed earlier in 1925, reflected a growing movement led by religious conservatives who saw Darwinian evolution as a direct threat to Christian values. William Jennings Bryan, a three-time presidential candidate, former Secretary of State, and the most prominent fundamentalist Christian spokesperson in the country, had personally lobbied state legislatures to ban the teaching of evolution in public schools. Bryan believed the nation was becoming increasingly godless and championed what he called a “Christian Commonwealth.” His efforts succeeded in Tennessee, and similar bills gained traction in other states.
The American Civil Liberties Union saw the Butler Act as a constitutional violation and sought a test case. John Scopes, a 24-year-old high school teacher, agreed to be the defendant. The case was designed from the start to challenge the law itself, not just determine whether Scopes had broken it.
Two Colliding Worldviews
The prosecution’s argument was straightforward: Scopes broke the law, and the people of Tennessee had every right to decide what was taught in their public schools. Bryan and the prosecution team treated this as a matter of democratic authority. Taxpayers funded the schools, elected the legislators, and those legislators passed the Butler Act. In Bryan’s view, the majority’s moral and religious convictions should shape public education. He framed evolution not as settled science but as a dangerous ideology undermining faith.
The defense, led by famed attorney Clarence Darrow, argued something fundamentally different. Darrow invoked the First Amendment’s Establishment Clause in his opening remarks, contending that the Tennessee law effectively established a religious doctrine as the basis for public education. If the state could ban any scientific theory that contradicted a particular reading of the Bible, it was entangling government with religion. The defense also framed the case around academic freedom, the principle that teachers should be able to teach established science without political interference. Scopes himself spoke to this point after the verdict: “Any other action would be in violation of my ideal of academic freedom, that is, to teach the truth as guaranteed in our constitution, of personal and religious freedom.”
Darrow Questions Bryan on the Bible
The trial’s most dramatic moment came on the seventh day, when Darrow called Bryan himself to the witness stand as an expert on the Bible. This was extraordinary. Defense attorneys almost never call opposing counsel as a witness, and the judge initially resisted, but Bryan agreed, confident in his ability to defend scripture.
What followed was a grueling cross-examination in which Darrow pressed Bryan on whether every passage in the Bible should be taken literally. Bryan tried to hold a middle ground, saying the Bible “should be accepted as it is given there” but that some passages were illustrative rather than literal. Darrow then walked him through one biblical story after another. Did Jonah really survive inside a great fish? Was the story of the global flood literally true? When the Bible says Joshua commanded the sun to stand still, did Bryan believe the sun orbited the earth?
Bryan acknowledged that the earth orbits the sun, not the other way around, which meant the biblical language couldn’t be strictly literal. When Darrow asked whether Bryan had ever considered what would physically happen to the earth if it suddenly stopped rotating, Bryan said he hadn’t. “The God I believe in could have taken care of that,” he replied. On the question of the earth’s age, Bryan distanced himself from the popular estimate of 4004 B.C., saying he “would not attempt to fix the date” and wouldn’t call it accurate. Each concession chipped away at the idea that the Bible could serve as a simple, self-evident alternative to scientific inquiry.
Darrow’s goal was never really to win an acquittal. It was to expose the intellectual contradictions of using scripture as the standard for science education. Bryan’s testimony made headlines across the country and became the defining image of the trial.
The Verdict and Its Reversal
The jury deliberated for fewer than nine minutes before finding Scopes guilty. The judge fined him $100. This was, in a narrow legal sense, the expected outcome. The defense had essentially conceded that Scopes taught evolution; the question was whether the law itself was constitutional.
Two years later, the Tennessee Supreme Court overturned the conviction on a technicality. The Butler Act did not allow fines under $100, but the state constitution required that any fine over $50 be set by the jury, not the judge. The judge had imposed the fine himself. By voiding the conviction on procedural grounds, the court avoided ruling on the constitutionality of the Butler Act, which remained on the books in Tennessee until 1967.
What the Trial Changed
The Scopes Trial didn’t settle the legal question of evolution in schools. That took decades of additional litigation. But it transformed the public debate. Bryan died just five days after the trial ended, and the national press coverage, much of it sympathetic to the defense, cast the anti-evolution movement as intellectually backward. The trial became a cultural shorthand for the tension between science and religion in American life.
Its effect on actual classroom teaching was more complicated than the popular narrative suggests. A widely repeated claim holds that biology textbooks became “less scientific” for decades after the trial, with publishers deleting references to evolution, removing pictures of Darwin, and burying the topic in back chapters where it could be skipped or even cut out with scissors. But this story has been challenged by scholars who have actually examined the textbooks in question. One commonly cited example is Exploring Biology by Ella Thea Smith, whose 1959 edition used the word “evolution” only once. In reality, the book contained extensive treatments of evolution and reproduction. Scholar Ron Ladouceur has called this popular narrative the “myth of Scopes,” noting that the 1963 textbooks often credited with “reintroducing” evolution into high school curricula were not dramatically more scientific than their predecessors.
The real legacy of the Scopes Trial was framing a debate that continues today: whether public education should reflect scientific consensus or defer to the religious beliefs of the community. Darrow and Bryan each represented a principle that millions of Americans still hold. The trial gave that conflict a stage, a cast of characters, and a storyline that has shaped how Americans argue about science, faith, and the classroom ever since.