Mrs. Shindy:
You left the discussion on the other thread hanging, so I will answer both you and Anon here.
The parents that threaten pay/raise full tuition, and can be counted on paying in 10-15K a year for the next 5-10 years. They also have connections, which causes additional funds to come into the system. The child not allowed in will need a discount and will bring in at most 1-2K, and will add additional children (BE”H) with no additional income to the school, causing further stress on the school’s finances.
The administrator has to pay the bills, and this works as a good excuse not to argue with someone who helps pay them.