Created by by Sonia Gill, founder of the consultancy Heads Up, this spreadsheet is intended help school leaders and business managers calculate how much time and money your school might be losing as a result of inter-staff conflict. Further details can be found in the explanatory video below.

Sonia Gill is the author of Successful Difficult Conversations in School and Journey to Outstanding

For more advice and resources, register with the Heads Up TV video channel and newsletter at ukheadsup.com/headsuptv; follow her at @SoniaG_HeadsUp

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