U-M locks hundreds of undergrads out of school buildings for not following COVID testing protocols Meredith Bruckner, Community News Producer, All About Ann Arbor Published: Updated: Tags: FILE: Students walk across the University of Michigan campus January 17, 2003 in Ann Arbor, Michigan. (Photo by Bill Pugliano/Getty Images) (2003 Getty Images) ANN ARBOR – The University of Michigan has deactivated Mcard access to non-residential buildings for 375 undergraduate students after they failed to comply with the school’s mandatory COVID testing requirements. Undergraduate students who reside on or visit campus have been required to undergo weekly COVID testing through the Community Sampling and Tracking Program since the beginning of the semester.