BRISTOL, Va. — Increasing enrollment and promoting science and math education are among the top priorities for new Sullins Academy Head of School Roy Vermillion. The private school’s board of directors recently removed Vermillion’s interim tag, a post he’s held since classes began in August. “This is my third year at the school but my first year as head of school,” Vermillion said Wednesday. “I started teaching here and this position came up and they asked me if I would take