„Disadvantaged children who are doing well in school at age 10 in Germany have access to high-quality Gymnasien, which can potentially provide the educational resources these children need to keep up academically with their more affluent peers.“
Dr. John Jerrim, „The Socio-Economic Gradient in Teenagers’ Reading Skills: How Does England Compare with Other Countries?“ in „Fiscal Studies“, 2012, vol. 33, no. 2, S. 176f