It's crazy how underpaid teachers are.
How is it you'd institute a merit system? By the volume-of-students-per-hour, or what, exactly? The least complaining parents? Test scores that depend on parental involvement to be any good? How are disinterested or absentee parents or those parents who have it in for teachers accounted for in such a system?
Like capital class could tell the difference
When I say paid, I obviously also mean in intangible ways, such as having enough time to go to the toilet between classes. Or being insulated from being yelled at by parents and meekly saying sorry for telling off their particularly concentration-destroying kid.