The high heritability of educational achievement reflects many genetically influenced traits, not just intelligence. Krapohl, Eva; Rimfeld, Kaili; Shakeshaft, Nicholas G.; Trzaskowski, Maciej; McMillan, Andrew; Pingault, Jean-Baptiste; Asbury, Kathryn; Harlaar, Nicole; Kovas, Yulia; Dale, Philip S.; Plomin, Robert. Proceedings of the National Academy of Sciences of the United States of America. 2014; 15273-15278: p.15273-15278. doi:10.1073/pnas.1408777111Article