Malcolm Gladwell frequently soft-sells homilies as scientific insight, but he does uncover vital nuggets of knowledge. Here's one that strikes at the heart of education, a need so vital and so poorly managed it should be declared a national emergency:
"Eric Hanushek, an economist at Stanford, estimates that the students of a very bad teacher will learn, on average, half a year’s worth of material in one school year. The students in the class of a very good teacher will learn a year and a half’s worth of material. That difference amounts to a year’s worth of learning in a single year. Teacher effects dwarf school effects: your child is actually better off in a “bad” school with an excellent teacher than in an excellent school with a bad teacher. Teacher effects are also much stronger than class-size effects. You’d have to cut the average class almost in half to get the same boost that you’d get if you switched from an average teacher to a teacher in the eighty-fifth percentile. And remember that a good teacher costs as much as an average one, whereas halving class size would require that you build twice as many classrooms and hire twice as many teachers." (Emphasis Mine.)
Here's an observation/conclusion We recognize as important and true, though We may have never given it much thought:
"The teacher then asked the children if anyone’s name began with that letter. “Calvin,” a boy named Calvin says. The teacher nods, and says, “Calvin starts with ‘C.’ ” A little girl in the middle says, “Me!” The teacher turns to her. “Your name’s Venisha. Letter ‘V.’ Venisha.”
It was a key moment. Of all the teacher elements analyzed by the Virginia group, feedback—a direct, personal response by a teacher to a specific statement by a student—seems to be most closely linked to academic success. Not only did the teacher catch the “Me!” amid the wiggling and tumult; she addressed it directly." (Emphasis Mine.)
And a wrap-up:
"In teaching, the implications (of the discussed reserach) are even more profound. They suggest that we shouldn’t be raising standards. We should be lowering them, because there is no point in raising standards if standards don’t track with what we care about. Teaching should be open to anyone with a pulse and a college degree—and teachers should be judged after they have started their jobs, not before... It needs an apprenticeship system that allows candidates to be rigorously evaluated. Kane and Staiger have calculated that, given the enormous differences between the top and the bottom of the profession, you’d probably have to try out four candidates to find one good teacher. That means tenure can’t be routinely awarded, the way it is now. Currently, the salary structure of the teaching profession is highly rigid, and that would also have to change in a world where we want to rate teachers on their actual performance. An apprentice should get apprentice wages. But if we find eighty-fifth-percentile teachers who can teach a year and a half’s material in one year, we’re going to have to pay them a lot—both because we want them to stay and because the only way to get people to try out for what will suddenly be a high-risk profession is to offer those who survive the winnowing a healthy reward." (Emphasis Mine.)
The conclusion is obvious and common: Pay people who perform better more than those who are mediocre and bad, and measure them all on results. You'd think even a teacher could grasp that concept.
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