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The changes were praised by an education advocacy group, with leaders saying that the problems of low-scoring students were for years masked by the high-achievers in some districts. Communities that have long prided themselves on their school systems are now left to ponder stark disparities, said Amber Arellano, executive director of the Education Trust-Midwest.
New this year is a designation based in part on the gap between the highest-scoring 30 percent of students and the lowest-performing 30 percent – a measure that landed some high-achieving schools in affluent areas in a new, “focus school” category. The 10 percent of the schools with the widest gaps are added to the group.