This isn't your mom's school nurse; it's a full medical center—in a high school. These school-based health centers are taking off in D.C. Here's why that's a good thing. While a school nurse can hand out band-aids and Tylenol, Jason Beverly, a medical provider at Anacostia Senior High School, can prescribe and administer antibiotics, allergy meds and more. Beverly is part of a movement in…