In a special issue forthcoming in the British Journal of Sociology compiled shortly before the Covid19 outbreak, an interdisciplinary group of scholars around Noortje Marres and David Stark examine the role of testing in society which, as the authors show, clearly reaches far beyond medical tests. Each article is briefly introduced in short videos here and put in relation to the current Covid19 crisis, which is putting us all to test in various way – us as people, our social relations, our organizations, and our institutions. What a great complementary source to our course material!