Newton North junior Emily Moss doesn’t think schools should be closed on Martin Luther King Day. Writing in an op-ed in Sunday’s Boston Globe, Moss instead proposes “a daylong exchange program across Boston and suburban schools, so that students from different neighborhoods could come together.”

Newton high school students participate in exchange programs all over the world, but most have never visited a Boston public school just 20 or 30 minutes away. It’s as if these Boston schools are walled off, strangely more foreign than the other nations we visit. And the suburban schools are similarly walled off from most of the Boston kids. It’s time to break down these walls.