The length of time a juvenile may be detained in a juvenile correctional facility depends on the severity of the crime the juvenile committed, according to FreeAdvice.com. Sentences for juvenile offenses vary depending on state and federal law.
Juveniles who commit additional crimes while detained in juvenile correctional facilities may have to serve additional time, notes FreeAdvice.com. Juveniles tried and convicted as adults may begin their sentences in juvenile detention centers and be moved to adult prisons for the remainder of their sentence. Depending on state and federal law, some older juveniles charged as adults may be placed in an adult prison immediately. Adult criminal statutes govern sentencing for juveniles tried as adults.