I would like some advice on the relationship that should exist between a CoG and the school's SIO. I have always got on very well with our SIO and found her advice to be invaluable when we recently recruited a new HT. However, I recently has a conversation with her where I made sure that I could talk to her about something in confidence. I wanted to get advice from her about behaviour concerns that I have about the HT. I also recently received a phone call from a teacher who believes they are being bullied by the HT, but who is not ready to make a formal complaint. Despite assuring me that I could speak in total confidence, the SIO has now told the HT about my conversation. To make matters worse, the HT has now told the staff that she is aware that one of them has spoken to the CoG. I am astounded at the breach of confidence by the SIO - she felt she had a duty to inform the HT (but not to warn me first apparently). Has she acted improperly, and should I be thinking about whether to request a different SIO? Is she there as a source of advice for me or the HT alone? The appalling people management skills of the HT is another matter - I can deal with that but want to be clear about the SIO's position.