[glenra]

The other way to figure it is that ~220 out of 75k teachers affected suggests a waste factor of 0.3%. (which agrees with your number if teacher salaries are about 1/3rd of the operating budget.) It's still substantial because in absolute terms $22M is a lot of money and it's all waste - the only sane policy would be to just fire these people or put them on unpaid suspension.

Nonetheless if we are to believe the official figures, they claim the number of rubber-roomers has declined from ~700 to ~200. Which isn't "dismantled" but is certainly "reduced"; it does seem like some progress is being made.