This article makes the case for an approach to reflective practice (RP) that is both evidence-based and data-led. We argue that, while RP within the field of TESOL enjoys a relatively high level of acceptance and status (perhaps even an orthodoxy), it has little corresponding knowledge base that demonstrates how RP "gets done". We…

Research suggests that school leaders play an important role in cultivating and developing collaborative data practices by teachers. Although diagnosis and intervention are critical facets of leaders' work to support collaborative data practice development, this work remains poorly understood. Missing from data-use literature is more explicit and…