You don’t fatten a pig by weighing it.
‘We know what we are, but not what we may be’- Shakespeare, Hamlet
It has become a truism in education that good professionals are able to predict the grades of their pupils accurately. Like most truisms, this needs further examination.
If a running coach spends their time making trainees run race after race, and times each one, he will be able to predict their performance in the final competition very accurately. But does that mean he is a good running coach?
No. Good running coaches do not spend their time making trainees run race after race. They break down the complex skill of successfully running races into its component parts, and assign their trainees exercises to build up those component parts. Instead of wasting time having them run races so that they can measure their performance, they have trainees build stamina and…
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