This toolkit, developed by Regional Educational Laboratory (REL) Central in collaboration with York Public Schools in Nebraska, provides a process and tools to help teachers use data from their classroom assessments to evaluate promising practices. The toolkit provides teachers with guidance on how to deliberately apply and study one classroom strategy over the course of one unit and systematically document and compare results to consider the effects of a given instructional strategy on student learning. The process for testing the strategy uses a scientific approach by comparing the performance of students who receive the strategy to the performance of a similar group of students who do not receive the strategy. Teachers can use this information to reflect on their practice and consider adjustments to their instruction to increase student learning. A section on technical documentation is appended.

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