This spring, America took an involuntary crash course in remote learning. With the school year now winding down, the grade from students, teachers, parents and administrators is already in: It was a failure. School districts closed campuses in March in response to the coronavirus pandemic and, with practically no time at all for planning or training, launched a grand experiment to educate more than 50 million students from kindergarten through 12th grade using technology. The problems began piling up almost immediately. There were students with no computers or internet access. Teachers had no experience with remote learning. And many parents...