Final answer:
In re Winship established that the standard of 'proof beyond a reasonable doubt' must be used when trying youths who may face confinement.
Step-by-step explanation:
The case In re Winship ruled that youths who may be sentenced to confinement must be held to the proof beyond a reasonable doubt standard. In criminal law, this is the highest standard of proof, underscoring the principle that a defendant is presumed innocent until proven guilty. This standard is in place to prevent convicting the innocent and requires that the evidence presented by the prosecution must be so convincing that there is no reasonable doubt left in the minds of the jurors regarding the guilt of the accused.