From day care to graduate school, teaching and learning have been upended as never before. Schools closed in March, teaching was relegated to Zoom, and parents became reluctant homeschoolers. While the wealthy assembled pods to avoid the risks of ordinary in-person schooling, the poor juggled full time childcare with essential work. Now, we’re seeing a patchwork of half-measures and ill-advised, staggered reopenings as another year begins — and rising rates...