Sentences with phrase «even average effectiveness»
Not exact matches
Nevertheless, even the most conservative of our three methodological approaches suggests substantial variation in principal effectiveness: a principal in the top 16 percent of the quality distribution will produce annual student gains that are 0.05 standard deviations higher than an average principal for all students in their school.
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The impact of even a slightly better - than - average quality teacher — one whose effectiveness ranks at the 60th percentile, for example — still has significant economic results, raising an individual student's lifetime earnings by $ 5,300, or a class of 20 students» aggregate lifetime earnings by a total of $ 106,000.
Even when derived by averaging several years of teacher scores, effectiveness estimates are unlikely to provide a level of reliability desired in scores used for high - stakes decisions, such as tenure or dismissal.