The experience in Sweden is that keeping schools open did not cause any problems. The main risk groups in Sweden are elderly (particularly those in care homes) and immigrants.<p>Since school is compulsory in Sweden, and homeschooling is illegal there, there is concern by some parents who would likely not do well if they got covid. They do not want to risk sending their kids in, but they have no choice.<p>In the US, homeschooling and other options exist.