Juilliard is the top arts school in America. A new documentary looks at the school as it turns 100. “What is perhaps most interesting about the documentary is the unflinching way it confronts the darker side of this famous place. Not that it isn’t ultimately celebratory, and rightly so. One comes away almost awed by the devotion and intensity with which the teachers, and the self-motivated students themselves, go about the business of making the best better, a process that goes on every day in the fortress-like building on the corner of Broadway and 65th Street. One has to wonder if an atmosphere like this, despite all the superb teachers and students and alumni, doesn’t breed a kind of hard-edged competitiveness that fails to serve all music or dance or theater equally well.”