"We should not be surprised that the Founding Fathers didn't foresee everything, when we see that the current Fathers hardly ever foresee anything."

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In the current environment, attributing low student performance to teacher tenure is one of the great unproven causal links out there. The relationship just hasn't been examined very carefully, but we should all recognize that in higher education the strongest institutions generally have the most robust tenure systems, and in elementary and secondary, the states with the strongest teacher unions (and tenure systems) tend to have the highest student performance.

— Nicholas Lemann