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First, the fact that you are seeking advice bodes well for your future there. Second, I have found that when trying to understand the culture of a building it helps to review the VADIR report as well as the student managment system for the types of referrals that are written and by who, it provides you with a bird's eye view into the past to see what helped lead to the current structure and daily practices. Additionally, it will provide you with documented background information about some of the faculty and students you will be trying to lead. It can be very useful when new challenges arise.
Sit down and meet with the various stakeholders in your learning community (teachers, chairpersons, directors, parents, custodians, teacher assistants, etc.). Allow them the opportunity to share concerns, present ideas, provide institutional history, discuss past academic initiatives, etc. in a non-judgmental manner. Practice will foster a collaborative environment in which individuals feel empowered to be creative, offer suggestions, etc.