SCOTUS React - In Re Gault (1966)

Facts of the case
Gerald Francis Gault, fifteen years old, was taken into custody for allegedly making an obscene phone call. Gault had previously been placed on probation. The police did not leave notice with Gault's parents, who were at work, when the youth was arrested. After proceedings before a juvenile court judge, Gault was committed to the State Industrial School until he reached the age of 21.

Question
Were the procedures used to commit Gault constitutionally legitimate under the Due Process Clause of the Fourteenth Amendment?