Reviewed by GREG KINGDirector: Mark RomanekStars: Keira Knightley, Carey Mulligan, Andrew Garfield, Isobel Meikle-Small, Charlie Rowe, Ella Purnell, Charlotte Rampling, Sally Hawkins.At first glance the rustic Hailsham seems like a typically privileged English boarding school, where orphaned students are raised by strict teachers and prepared for their future. But as we quickly learn, Hailsham has a …