Schools should do this. Parents who cry and bla bla bla… if thats the schools policy and you don’t like it send ur kid elsewhere – they wont do that coz usually there’s not too many options with frum schools… after 15 years of this being implemented PROBLEM SOLVED!! they’ll carry on surviving the same way they have been for the past 50 years for 15 years only and slowly it will improve as they keep getting paid back!
Except that:
1: There is no way to enforce it. It has been tried (such as second mortgages, legal documents, etc.) and end story, no yeshiva will remove someone from their home due to nonpayment.
2: Costs never really go down, because life support for your son in law is more expensive than tuition.