In 2002, 20 black seventh graders from Baltimore’s inner city, many of them from troubled homes, were sent to Baraka, an experimental boarding school in Kenya. Filmmakers Heidi Ewing and Rachel Grady spent three years following four of them, and the resulting documentary is sensitive, intelligent, enlightening, and sometimes surprising. Ewing and Grady give us a nuanced sense of these boys’ options, and it’s typical of their attention to detail that during a long-distance phone call, cameras in Baraka and Baltimore record both sides of the conversation. R, 85 min. (JR)