An Abundance of Caution: American Schools, the Virus, and a Story of Bad Decisions (MIT Press, 2025) is a devastating account of the decision-making process behind one of the worst American policy failures in a century—the extended closures of public schools during the pandemic. In fascinating and meticulously reported detail, David Zweig shows how some of the most trusted members of society—from Pulitzer Prize–winning journalists to eminent health officials—repeatedly made fundamental errors in their assessment and presentation of evidence. As a result, for the first time in modern American history, millions of healthy children did not set foot in a classroom for more than a year.
Since the spring of 2020, many students in Europe had been learning in person. Even many peers at home—in private schools, and public schools in mostly “red” states and districts—were in class full time from fall 2020 onward. Whatever inequities that existed among American children before the pandemic, the selective school closures exacerbated them, disproportionately affecting the underprivileged. Deep mental, physical, and academic harms—among them, depression, anxiety, abuse, obesity, plummeting test scores, and rising drop-out rates—were endured for no discernible benefit. As Europe had shown very early, after they had sent kids back to class, there was never any evidence that long-term school closures, nor a host of interventions imposed on students when they were in classrooms, would reduce overall cases or deaths in any meaningful way.
The story of American schools during the pandemic serves as a prism through which to approach fundamental questions about why and how individuals, bureaucracies, governments, and societies act as they do in times of crisis and uncertainty. Ultimately, this book is not about COVID; it’s about a country ill-equipped to act sensibly under duress.

David Zweig is the author of the novel Swimming Inside the Sun and the nonfiction book Invisibles. He has testified twice before Congress as an expert witness on American schools during the pandemic, and his investigative reporting on the pandemic has been cited in numerous congressional letters and a brief to the Supreme Court. Zweig’s journalism has appeared in The New York Times, The Wall Street Journal, The New Yorker, The Atlantic, New York, Wired, The Free Press, The Boston Globe, and, most often, his newsletter, Silent Lunch. He lives with his family in New York State.

Caleb Zakarin is editor of the New Books Network.

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