There is an old saying about educational assessment: “If you want to fatten a pig, it doesn’t help to weigh it more often.”
To be fair, it may actually help to weigh pigs more often, so the farmer knows whether they are gaining weight at the expected levels. Then they can do something in time if this is not the case.
It is surely correct that weighing pigs does no good in itself, but it may serve a diagnostic purpose. What matters is not the weighing, but rather what the farmer or veterinarian does based on the information provided by the weighing.
This blog is not, however, about porcine policy, but educational policy. In schools, districts, and even whole states, most American children take “benchmark assessments” roughly three to six times a year. These assessments are intended to tell teachers, principals, and other school leaders how students are doing, especially in…
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