When Emma Swainston decided as a teenager to pursue a career in teaching, she came to grips with the likely reality that homeownership would be out of reach. “I feel like you have to get a leg up from somewhere else, whether through family members or a career that makes a lot more money than the teachers do,” she says. But in September, Swainston, 26, closed on a new two-bedroom home 15 minutes away from the public high school where she teaches math in Henrico County, Virginia. She was able to