With the shift to computerized testing, tablets in the classroom and digitized personal records, schools are collecting more data than ever on how children are doing, The Wall Street Journal reports.

Now, some educators believe, it’s time to put that data to use.

Every answer on a quiz can be analyzed to give teachers a precise picture of what their students have learned. A pattern of wrong answers is no longer just a bad grade; teachers can get clues to why students picked the wrong answer. Publishers can analyze which chapters in their textbooks are working, and which might need revising.

Steven Ross, a professor at the Center for Research and Reform in Education at Johns Hopkins University, says using data to help tailor education to individuals will drive learning in the future.

… Over the past decade, schools have started using cloud storage or begun sending more data to state education departments for collection and analysis. The amount of data collected is expected to swell as more schools use apps and tablets that can collect information down to individual keystrokes, or even how long a student holds a mouse pointer above a certain answer.

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