My parents had to do something similar, so I'm not too unfamiliar with the concept: https://en.wikipedia.org/wiki/Union_of_Pioneers_of_Yugoslavi...

But even that was once-in-a-lifetime event to emphasise the importance of the first day at school at age 7, it did not happen every Monday.

Needless to say, it wasn't very effective. As evidenced by history, some of our parents definitely broke that pledge later in their life.