This has been proven. The Department of Education conducted the National Assessment of Adult Literacy in 1992 and 2003. The average score was almost identical

This has been proven. The Department of Education conducted the National Assessment of Adult Literacy in 1992 and 2003. The average score was almost identical, but the scores for college graduates plummeted. https://nces.ed.gov/naal/kf_dem_edu.asp https://nces.ed.gov/naal/kf_dem_edu.asp