Twin girls Alma and Clil and their mother, Anna Michel, (right) wait their turn to enter their elementary school in Jerusalem Sunday for the first time in weeks. (David Vaaknin for The Washington Post)

JERUSALEM — At the Michel household, the first normal school morning in six weeks felt anything but. Clil and Alma, identical twin 7-year-olds, were by turns giddy and apprehensive as Israel, after days of on-again, off-again uncertainty, opened schools Sunday to thousands of first-, second- and third-graders.

Like families around the world, the Michels had been waiting for back-to-school day as a coronavirus milestone. But even as they packed the backpacks — the new supply lists included masks, hand sanitizer and cloth napkins to unfold under their snacks — they didn’t know whether the return would reduce the frightening grind of the country’s outbreak, or amplify it.