Author Katharine B. Stevens, in this article explores the new study about socioeconomic achievement gap in the US that has remained unchanged for the past 50 years. The data used to conduct this study came from the international large-scale assessment studies NAEP, TIMSS and PISA. In the article, the author mentions that despite enormous public investment ($700 billion annually), achievement gaps between wealthier and poorer children have remained unchanged over the past 50 years.
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