Stanford v. Kentucky is the 1989 Supreme Court decision that upheld the death penalty for offenders who were sixteen or seventeen years old when they committed their crimes. In a 5–4 ruling, the Court found no national consensus against executing older teenagers and left the question to the states. That rule stood for sixteen years before Roper v. Simmons overturned it in 2005 and barred capital punishment for anyone under eighteen at the time of the offense.
The Question the Court Faced
The case consolidated two prosecutions. Kevin Stanford was roughly seventeen years and four months old when he committed murder, sodomy, and robbery in Kentucky. Heath Wilkins was about sixteen years and six months old when he murdered a store clerk during a liquor store robbery in Missouri.1Cornell Law Institute. Stanford v. Kentucky, 492 U.S. 361 Both were transferred out of the juvenile system and tried as adults after judges concluded that the severity of the crimes and the limits of juvenile rehabilitation warranted adult proceedings.
One year earlier, in Thompson v. Oklahoma (1988), a plurality of the Court had concluded that executing someone who was under sixteen at the time of the offense violated the Eighth Amendment.2Justia U.S. Supreme Court Center. Thompson v. Oklahoma Thompson never produced a majority opinion, so it left an obvious follow-up: what about a sixteen- or seventeen-year-old? Stanford was the Court’s answer.
The constitutional question was whether the Eighth Amendment, applied to the states through the Fourteenth, forbids executing someone for a crime committed at sixteen or seventeen. Petitioners argued that adolescent brain development and reduced moral responsibility created a constitutional barrier. The states argued that legislatures, not courts, should draw those lines.
The 5–4 Ruling
The Court held that the Constitution did not prohibit executing offenders who were sixteen or seventeen at the time of their crimes.3Justia U.S. Supreme Court Center. Stanford v. Kentucky The decision turned on state legislation as the primary measure of society’s moral standards.
Justice Scalia’s Plurality Opinion
Justice Scalia wrote the lead opinion, joined by three other justices. His approach was deliberately narrow. The relevant question, in his view, was not whether juvenile executions were wise or moral, but whether the American people, speaking through their elected representatives, had rejected the practice. He found they had not. Of the thirty-seven states that allowed the death penalty at the time, fifteen prohibited it for sixteen-year-olds and twelve prohibited it for seventeen-year-olds.4Library of Congress. Stanford v. Kentucky, 492 U.S. 361 A majority of death-penalty states still permitted these sentences for older teens.
Scalia rejected public opinion polls, the views of professional organizations, and international practice as evidence of a national consensus. He also refused to conduct a proportionality analysis weighing a juvenile’s reduced culpability against the severity of the death penalty. The Court’s job, he wrote, was to read the legislative landscape, not to substitute its own moral judgment for the democratic process.
Justice O’Connor’s Concurrence
Justice O’Connor supplied the fifth vote and wrote separately. She agreed that no national consensus existed against executing sixteen- and seventeen-year-olds, noting that every state legislature that had set a minimum age for capital punishment had placed it at sixteen or above.5Wikisource. Stanford v. Kentucky – Concurrence O’Connor On that basis, she concurred in the result.
But O’Connor disagreed with Scalia’s refusal to conduct any proportionality review. She maintained that the Court had a constitutional obligation to weigh the harshness of the punishment against the defendant’s blameworthiness, and that age-based distinctions elsewhere in state law were relevant to that analysis. Her position left the door open for a future Court to revisit the question if the evidence shifted, which is what happened sixteen years later.
Justice Brennan’s Dissent
Justice Brennan, joined by Justices Marshall, Blackmun, and Stevens, argued that the death penalty for juveniles was unconstitutional under any reasonable reading of the Eighth Amendment. Where Scalia counted state statutes, Brennan insisted the Court should also weigh scientific evidence about adolescent development, international norms, and the purposes of capital punishment itself.
Brennan cited research showing that adolescents are more impulsive, more vulnerable to peer pressure, and less capable of long-range thinking than adults.6Wikisource. Stanford v. Kentucky – Dissent Brennan Those traits, he argued, reduce a teenager’s moral responsibility and make execution disproportionate to their culpability. He pointed out that over fifty countries had abolished the death penalty entirely and sixty-five more prohibited it for juveniles, a near-universal rejection he treated as powerful evidence of evolving standards of decency.
Brennan also challenged the two goals traditionally used to justify capital punishment. Retribution requires that the punishment fit the offender’s blameworthiness, and a teenager’s diminished maturity undercuts that justification. Deterrence assumes a rational cost-benefit calculation before the act, precisely the kind of thinking adolescent brains do worst. If executing a juvenile neither delivers proportionate retribution nor deters future crime, he concluded, the Eighth Amendment forbids it.
How Roper v. Simmons Overturned Stanford
Stanford’s rule survived until 2005, when the Court decided Roper v. Simmons in another 5–4 vote. Justice Kennedy wrote the majority opinion, joined by Justices Stevens, Souter, Ginsburg, and Breyer. The Court held that the Eighth and Fourteenth Amendments forbid the death penalty for anyone under eighteen at the time of the crime.7Justia U.S. Supreme Court Center. Roper v. Simmons
The majority found that the national consensus had shifted since 1989. More state legislatures had moved away from the juvenile death penalty, and even in states that still permitted it, juries rarely imposed it. Kennedy went further than counting statutes. Picking up the proportionality analysis O’Connor had preserved in her Stanford concurrence, the Court identified three characteristics that distinguish juveniles from adults: a lack of maturity and an underdeveloped sense of responsibility, greater vulnerability to outside pressures and negative influences, and a still-forming character less likely to reflect an irretrievably depraved nature.
International law played a supporting role. The Court noted that the United States was the only country still officially sanctioning the juvenile death penalty, and that the United Nations Convention on the Rights of the Child, ratified by every country except the United States and Somalia, explicitly prohibited capital punishment for offenses committed by anyone under eighteen.7Justia U.S. Supreme Court Center. Roper v. Simmons The Court said the global consensus did not control its decision but confirmed that the practice was disproportionate. Roper vacated the capital sentences of roughly seventy juvenile offenders then on death row.
What the Law Looks Like Now
Roper did not end the Court’s reexamination of how the justice system treats young offenders. The reasoning that juveniles are fundamentally different from adults proved difficult to confine to the death penalty context, and later cases extended the logic to other severe sentences.
In Graham v. Florida (2010), the Court held that sentencing a juvenile to life without parole for a crime that did not involve a killing violates the Eighth Amendment. Because juveniles have a greater capacity for change than adults, a sentence denying any possibility of release is disproportionate when the underlying crime did not take a life.8Cornell Law Institute. Graham v. Florida Sentencing courts must give these offenders a meaningful opportunity for release based on demonstrated maturity and rehabilitation.
Two years later, Miller v. Alabama (2012) addressed juvenile homicide offenders. The Court struck down sentencing schemes that automatically imposed life without parole on juveniles convicted of murder. Before imposing that sentence, a court must consider the offender’s age, maturity, home environment, the circumstances of the offense, and the degree to which peer pressure or family dysfunction contributed to the crime.9Justia U.S. Supreme Court Center. Miller v. Alabama
Montgomery v. Louisiana (2016) made the Miller rule retroactive, requiring new sentencing hearings for everyone already serving a mandatory life-without-parole sentence for a crime committed as a juvenile. Then in Jones v. Mississippi (2021), the Court clarified that a judge does not need to make a separate factual finding that a juvenile is permanently incorrigible before imposing life without parole. A discretionary sentencing system that permits the judge to consider youth-related factors is constitutionally sufficient, even if the judge ultimately imposes the harshest available sentence.10Supreme Court of the United States. Jones v. Mississippi Jones disappointed advocates who had read Miller and Montgomery as effectively requiring courts to find a juvenile irredeemable before locking them away for life.
Taken together, these decisions trace a clear arc from Stanford’s hands-off approach to a constitutional framework that treats juvenile offenders as categorically less culpable than adults. Stanford v. Kentucky is no longer good law, but reading it alongside Roper shows how quickly constitutional consensus can shift when science, international practice, and legislative trends all move in the same direction.