In Canada the Children of Mary was an organizaiton for children, boys and girls in the first 8 grades.
In high school the girls joined the Sodality of Our Lady and the boys joined Junior Holy Name Society.
The girls could remain in the Sodality until they got engaged, the boys in Jr. Holy Name until about age 21.
When the girls got engaged, they joined the Christian Mothers for formation and remained there for life.
Each of the groups had their own medals, prayer books etc.
Married people were not allowed in the Sodality.