Ryan Mohler, 15, a freshman at Neuqua Valley High School, sits in his room and watches an instructional video on CPR for his online physical education class. After a teammate tested positive for COVID-19, members of the freshman and sophomore football teams were put on quarantine for two weeks. (Stacey Wescott / Chicago Tribune)
The soaring number of students in quarantine is the latest obstacle for schools and sports teams trying to get back to normal
