During summer breaks we would be together but my mother would chaperone.
Ask a "cool" aunt/uncle or trusted neighbors to chaperone a teen party.
The couple never went anywhere without a chaperone and rarely talked on the phone alone without other family members involved in the conversation.
I just got to see him doing the Drowsy Chaperone in New York.
The adults hosting the party can volunteer to chaperone the children as they travel around the neighborhood trick-or-treating and then drop them off at home.