The 2010s were the decade for technology to fundamentally change education. Two years before the decade’s dawn, Clayton Christensen, Michael B. Horn and Curtis Johnson predicted in their book Disrupting Class that online learning would revolutionize teacher-led instruction and catalyze a student-centered transformation in U.S. K-12 schools. As the decade began, enthusiasm for ed tech...

As educators scope out their work during the early ramp-up of the school year, one important item on their to-do list should be building connections with students’ families and learning about their lives outside of school. This isn’t just a sensible idea: Modularity Theory, a framework that explains how to optimize system performance, illustrates why...