Eugenics stopped being a topic of credible scientific inquiry in the United States around the time T. H. Morgan’s lab began publishing Drosophila-based genetic data in 1915, or at the latest, when the Carnegie Foundation began to pull funding from the Eugenic Records Office at Cold Spring Harbor in the later 1930s. But its legacy as part of the biology curriculum was much longer-lived than is commonly assumed.
The charts below track the relative priority of the topic of eugenics in the American biology curriculum based on direct examination of 83 high school biology textbooks and 43 college-level biology textbooks published in the United States between 1904 and 1973. (See database).
Tracing the history of the promotion of eugenics in American biology textbooks reveals several surprises.
First, despite the eugenic horror of World War II, the topic of eugenics remained a fixture of a majority of biology textbooks into the 1960s. Second, while the decade between 1925 and 1935 represented the peak of enthusiasm for eugenics in textbooks, this enthusiasm diminished only gradually over the following 30 years. Third, while a few high school textbook authors began to actively counter eugenic claims starting around 1938, college textbook authors continued to present eugenics without disclaimer. Lastly, no college textbook failed to mention eugenics from the mid-1940s on. Forgive the double negative, but what this means is that after World War II, college-level textbooks featured eugenics more routinely than they had in years prior.