6 things we've learned about how the pandemic disrupted learning

How did the pandemic disrupt learning for America's more than 50 million K-12 students?

For two years, that question has felt immeasurable, like a phantom, though few educators doubted the shadow it cast over children who spent months struggling to learn online.

Now, as a third pandemic school year draws to a close, new research offers the clearest accounting yet of the crisis's academic toll — as well as reason to hope that schools can help.

1. Surprise! Students learned less when they were remote

But really, this should surprise...