The students at MOT Charter know the drill by now. Every two weeks, they swab their noses. Fifteen minutes later, an antigen test returns a positive or negative COVID-19 result. MOT Charter is one of about 75 Delaware schools using antigen testing to catch asymptomatic COVID-19 cases, with more buildings expected to be added in the coming weeks. Putting antigen testing in more schools is part of a pilot program pushed by the state Division of Public Health – and could play a key role in getting more kids back in the classroom full time after a year of virtual and hybrid learning.