This thread has been open for a while. It appears that Israel is no reclosing schools because the reopening was followed by a spike in coronavirus infections.
That gives us two things to learn from Israel: (1) Even if it looks OK to open up, it might be too soon; and (2) if you open up and corona infection counts spike, close down again.
Confidential to Joseph: Hashem protects Israel. Governments, even the Israeli one, consists of mere humans.