From: Teaching evolution in U.S. public schools: a continuing challenge
2007 (N = 926) | 2019 (N = 752) | |||
---|---|---|---|---|
Human evolution | General evolutionary processes | Human evolution | General evolutionary processes | |
Not covered | 17% | 1% | 17% | 5% |
1–2 h | 35% | 9% | 28% | 8% |
3–5 h | 25% | 23% | 20% | 13% |
6–10 h | 12% | 27% | 14% | 25% |
11–15 h | 4% | 17% | 7% | 18% |
16-20 h | 2% | 11% | 5% | 14% |
20 h or more | 2% | 10% | 5% | 13% |
No answer provided | 2% | 2% | 4% | 4% |
Total | 100% | 100% | 100% | 100% |
Mean hours | 4.1 | 9.8 | 7.7 | 12.4 |
Standard Deviation | 4.8 | 6.3 | 6.3 | 6.8 |