Which case established the requirement of beyond a reasonable doubt in juvenile proceedings?

The requirement of "beyond a reasonable doubt" in juvenile proceedings was established by the case of Re Winship in 1970. This landmark decision emphasized that the standard of proof commonly applied in criminal cases should also be applicable in juvenile delinquency proceedings. The Supreme Court ruled that due process demands this higher standard of proof because juvenile proceedings can result in significant consequences for the youth involved, including loss of liberty. The decision highlights the importance of protecting the rights of juveniles, ensuring that the state must meet a high threshold of evidence before labeling a youth as delinquent and subjecting them to punitive measures. This ruling has had a lasting impact on how juvenile cases are adjudicated, reinforcing the principle that even young offenders deserve fairness and substantial proof before being deprived of freedom.