Have any of you done this? Are you MaSTs? Do you have one in your school? I have the opportunity to start in October, but wondered how other people have found the workload and what difference it makes to your school. Obviously I've been to a presentation and listened to the, carefully selected I'm sure, MaSTs talking about their experience, but wondered about the rest of you. Will it be the best thing I've ever done, or the biggest headache?