From: Teaching evolution in U.S. public middle schools: results of the first national survey
 | Middle school | High school |
---|---|---|
 | (N = 653) | (N = 718) |
No courses | 42.3 | 19.0 |
One course | 22.7 | 14.7 |
Two courses | 14.3 | 17.2 |
Three or more courses | 20.6 | 49.1 |
Total | 100.0 | 100.0 |