The science about whether it’s safe to send kids back to school is a total mess

But because so many children are likely to show mild symptoms or be asymptomatic, the true number of cases is likely to be much higher than we know. “At this point, primarily, we’re testing people who are symptomatic, except in the case of health workers and others where we need to know if there’s been a lot of exposure,” says Dr. Cynthia Haq, a clinical professor and chair of the Department of Family Medicine at the University of California, Irvine, “and because children are less likely to be symptomatic, you’re less likely to be tested.”