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GMAT
GMAT Data Insights Section

Evaluating Data Argument on Class Sizes

Easy Critical Reasoning Evaluating Data Arguments

A recent report from the National Educational Association (NEA) indicates that schools with smaller class sizes tend to have higher student performance. The report analyzed data from 500 schools across various states and found that schools with an average class size of fewer than 20 students had students scoring, on average, 15% higher on standardized tests than schools with class sizes of over 30 students.

In light of this data, the NEA argues that increasing funding for smaller class sizes could significantly enhance overall student achievement. However, some critics suggest that there may be other contributing factors to student performance that are not accounted for in this report.

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