I've just moved schools from a relatively squabble free department. My new department has a very supportive and forward-thinking Head of Department but it's her first year here too and she's inherited a department from a HofD with 20+ years in the role. The assistant HofD and a couple others seem to be preserving the memory of the last HofD including mixed sets (which is up for debate), a prehistoric SOW structure and revision lessons for C/D borderline students which remove students from PE lessons. I know change takes time but decisions about the running of the department have been taken behind the HofD's back when certain members realised she wasn't on the same page. I've also had a run in with one member of the department who shouted at me in front of students for 'getting the system wrong'. I'd like to know how to support my HofD in the face of these difficult and 'reluctant-to-change' people. Thanks.