That's quite tricky. Telling the students to take the medicine in front of you might sound too pushy (just to prove that they're really sick). If they still haven't seen the point and the weight of going to a boarding school, then might as well let them be. They missed classes -- it's not your fault. Maybe the best way to teach them a lesson is to report directly to the professor about the students' absence in spite the fact that they're well and not sick. :nurse-angel: