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FIve whys for inquiry protocol, developed by the School Reform Initiative. You might use this protocol together with related guidance that includes a template and an everyday example.
Fishbone protocol, developed by the High Tech High Graduate School of Education used by Denver Public Schools. A continuous improvement toolkit, created by the Regional Education Laboratory Northeast and Islands, contains additional tools and information related to fishbone diagrams (pp. II-14 - II-24) that might be helpful for your team.
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