Anya Kamentz, NPR: Garrison Institute looks a little like Hogwarts. The retreat center is housed in a former monastery amid tranquil green hills overlooking the Hudson River, 60 miles north and a world away from New York City.
Inside the airy chapel on a recent summer afternoon, about 35 educators from the U.S. and at least five foreign countries are seated quietly, shoes off.
“Just notice your breath, the sensation of your air coming in, going out,” says Christa Turksma, a Dutch woman dressed all in white with silver-white hair. She’s one …