The Seductive Lure of Big Data: Practitioners Beware
Big Data beckons policymakers, administrators and teachers with eye-popping analytics and snazzy graphics. Here is Darrell West of the Brookings Institition laying out the case for teachers and administrators to use Big Data:
Twelve-year-old Susan took a course designed to improve her reading skills. She read short stories and the teacher would give her and her fellow students a written test every other week measuring vocabulary and reading comprehension. A few days later, Susan’s instructor graded the paper and returned her exam. The test showed that she did well on vocabulary, but needed to work on retaining key concepts.
In the future, her younger brother Richard is likely to learn reading through a computerized software program. As he goes through each story, the computer will collect data on how long it takes him to master the material. After each assignment, a quiz will pop up on his screen and ask questions concerning vocabulary and reading comprehension. As he answers each item, Richard will get instant feedback showing whether his answer is
Twelve-year-old Susan took a course designed to improve her reading skills. She read short stories and the teacher would give her and her fellow students a written test every other week measuring vocabulary and reading comprehension. A few days later, Susan’s instructor graded the paper and returned her exam. The test showed that she did well on vocabulary, but needed to work on retaining key concepts.
In the future, her younger brother Richard is likely to learn reading through a computerized software program. As he goes through each story, the computer will collect data on how long it takes him to master the material. After each assignment, a quiz will pop up on his screen and ask questions concerning vocabulary and reading comprehension. As he answers each item, Richard will get instant feedback showing whether his answer is
