A middle school principal analyzes end-of-year state assessment data and finds that while overall math scores have improved, the achievement gap between English Language Learners (ELLs) and non-ELLs has widened. What is the most appropriate next step for the principal in a data-informed decision-making process?
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A
Implement a new, district-recommended math curriculum for all students next year.
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B
Disaggregate and analyze additional data sources, such as formative assessments, student work, and attendance records for the ELL subgroup.
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C
Provide mandatory professional development for all math teachers on general strategies for improving test scores.
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D
Hire a bilingual instructional aide to support all math classrooms.