Washington Post: “The promise was clear and hopeful: With strong public health measures, then-President-elect Joe Biden declared in early December, ‘the majority of our schools can be open by the end of my first 100 days.’ The reality has been far more complicated.” “Unlike many of his other vows and directives — pledging 100 million coronavirus vaccine doses in his first 100 days or mandating that all Americans wear masks on federal property — reopening schools is a daunting task over which the federal government has little authority.