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The Boston Globe

Metro

Harvard study shows that teacher quality affects student outcomes

Nearly everyone has an anecdote about the teacher that made a difference to them: the person who taught iambic pentameter or quadratic equations, but also inspired and imparted wisdom. But does teacher quality really matter, or do we simply have fond memories of our mentors?

The answer to the question may seem obvious — how could the quality of a teacher not be critically important to students? But even as education policies target teacher quality, the true effect of having a great teacher, versus a merely average one, have been difficult to assess.

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