The Educational Opportunity Project at Stanford University has developed an interactive website that enables users to explore average test scores, improvements in test scores, and trends in test scores across the United States. Using data from the Stanford Education Data Archive, the site features maps showing how well students are performing on all three measures. Users can drill down to view data from specific states, counties, districts, and schools. They can also explore how students from specific demographic groups perform and the degree to which specific gaps between groups appear in the data. The data are drawn from math and English language arts tests administered to students in grades 3-8 from 2008-09 to 2015-16.
The site also features articles delving into what researchers have learned so far from the data. Current articles, both by Sean Reardon, consider the link between school affluence and learning rates and gaps in Black and White students’ test scores.