Earlier quoted context omitted.
I'm curious what the fine level was relative to the income of the parents, and if the fine was viewed more as a convenience fee than a penalty. I'm thinking if the fine was raised to a high enough dollar amount, tardiness would again drop off, or at the very least, revenue would increase enough to justify hiring someone to stay late...
I don't think income plays into it. It converts the transaction of one of spending social capital (social mores, trust) to financial capital; social capital, IMHO, is harder to acquire, therefore far more valuable. Anyways, because you asked: http://rady.ucsd.edu/faculty/directory/gneezy/pub/docs/fine.... "It is true that a ‘‘large enough’’ fee would eventually reduce the behavior. For instance, many day-care centers…
One of the daycares at 5:30 would just take the kids with her on her nightly errands, and you'd have to run all over town to find them at the grocery store or whatever.
These are both ways of making it clear that it is socially unacceptable to be late.