Responses are to the following: Do you think that modifying the genes of certain crops is... [1 Extremely dangerous for environment], [2 Very dangerous], [3 Somewhat dangerous], [4 Not very dangerous], [5 Not dangerous at all for environment], [6 Can't choose]. Percentages may not add to 100... Categories do not add to total n because "don't know" responses and refusals to respond are not shown. b For science and mathematics education, "low" equates to five or fewer high school and college science or mathematics courses, "middle" is six through eight courses, and "high" means nine

Responses are to the following: When you read or hear the term scientific study, do you have a clear understanding of what it means, a general sense of what it means, or little understanding of what it means? Percentages may not add to 100% because of rounding.... For science and mathematics education, "low" equates to five or fewer high school and college science or mathematics courses, "middle" is six through eight courses, and "high" means nine or more courses. b Categories do not add to total n because "don't know" responses and refusals to respond

SES = socioeconomic status.... McFarland J, Hussar B, Wang X, Zhang J, Wang K, Rathbun A, Barmer A, Forrest Cataldi E, and Bullock Mann F, The Condition of Education 2018, NCES 2018-144 (2018), Tables 302.10, 302.20, 302.30. See Table S1-6. Science and Engineering Indicators