When Melissa Stewart, the radio/TV teacher at Indiana’s Charlestown High School, had to step away for cancer treatment, her students rose to the occasion to ensure WPMQ, the school’s station, continued to operate smoothly in her absence.Stewart completed chemotherapy in November. “They don’t tell you a lot of things about cancer that in treatments that you go through that are really, really rough,” she said.Stewart’s greatest concern was being away from her students.”I was stressing about ‘oh my gosh, we’ve got to get this or that done. I’m going to miss Monday because I have chemo again and then I’m probably going to miss Thursday because I have another doctor’s appointment,” she said.The classes provide real-world experience in content creation, sports broadcasting, and programming commercials. Seniors, including Stewart’s daughter Aiden, took charge to keep the station running.”She has been through a lot with, you know, watching me go through this …