I've been Deputy Head in a small private school for sometime and am part of SMT. I've been promoted to Head from August 2011. Most of the staff had signed new contracts before my appointment was made known. For 90% this is fine - they are very, very supportive and, despite my relative youth compared to previous Heads, generally happy with the appointment (at least superficially!), parents are almost universally behind my appointment (i am a parent of a child in a lower part of the school and am 'friends' with many parents in so much as I drop my own daughter off at their houses and have a cup of tea) and, obviously, the board are happy. However... the odd staff member is not so supportive. I've normally quite a pragmatist and recognise this is pretty normal. But one of them is SMT (and obvious candidate for DH). He arrived as I was appointed DH but is older and more qualified (in particular I don't have an MA) and rather obviously feels he was the better choice for DH and now for Head. (I was interviewed comprehensively by the board, but was 'invited' to. He was not invited to interview) He has made it clear he is leaving at the end of next year (which makes it difficult to appoint him as DH) but I'm already very, very nervous about being undermined from within. He is a professional and a decent teacher and I'm trusting his better nature, but already I've felt that he is waiting for me to fail, and consequently, would like to help me do so by disagreeing with a lot of decisions in a "i wouldn't have done that" / "shrug of the shoulders" kind of way. My question: Anyone else been in this position? How important is it to have a supportive team? Did it take you time to build a team around yourselves anyway?