| # of slaves | President | % Correct |
|---|---|---|
| 317 | Washington | 100%
|
| 600 | Jefferson | 90%
|
| <200 | Jackson | 83%
|
| 75 | Monroe | 82%
|
| 100+ | Madison | 80%
|
| 25 | Polk | 77%
|
| 70 | Tyler | 72%
|
| 1 | Van Buren | 72%
|
| 11 | Harrison | 71%
|
| <150 | Taylor | 71%
|
| 8 | Johnson | 66%
|
| 5 | Grant | 64%
|