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On a recent schoolday, Lisa Smith’s iPhone notified her that her fourth-grader Aidyn listened in math class that day, showed teamwork and stayed on task in the classroom.
That’s thanks to an app called ClassDojo, which elementary and middle school teachers are using to provide real-time reports to parents throughout the day. As of September, 101,000 schools, kindergarten through eighth grade, are using the app, up 17% from a year ago. As it spreads, it is raising questions about how useful it is for teachers to grade children…