Below are all of the URLs with the requested keyword, in the timeframe requested. This number will differ from the total article count in the confluence report, because this report shows all headlines containing a single keyword, but a single headline may have confluences on multiple keywords.
From abcnews.go.com
From www.cbsnews.com
From www.cnn.com
From www.foxnews.com
Dr. Makary on Oakland teachers calling classrooms a ?death trap?: They're making ?an eternal excuse?
Chicago Public Schools cancel classes for third straight day as battle with teachers union continues
Thiessen slams COVID class cancellations: 'Any teacher that refuses to teach should not be teaching'