It’s impossible for one teacher, even the very best teacher, to fully and correctly appreciate all the improvements that students naturally make.
“…you probably think humans are lazy and given the opportunity they will do nothing…”

In the same way it is impossible for your mythical taxpayer to make all the decisions you require of them.

If a dedicated teacher cannot, how can any other person make such an appraisal, when (according to you) they also have to run the local council and state and federal services, not to mention all companies once they pay 100% of their income in tax and have to decide how best to allocate their money.

Have you even attempted to do yourself what you are asking everyone to do?

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