| Index | Goodwill | South Dakota | National |
| Average Test Scores | n/a | 48% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 340 | 79,221 |
| Total private schools | n/a | 76 | 24,874 |
| Total post-secondary schools | n/a | 25 | 7,963 |
| Index | Goodwill | South Dakota | National |
| Completed 8th grade | 72.8% | 89.1% | 84.3% |
| Completed high school | 69.9% | 86.8% | 83.0% |
| Completed some college | 45.2% | 60.4% | 59.4% |
| Completed associate degree | 26.9% | 38.5% | 38.5% |
| Completed bachelors | 6.4% | 27.5% | 30.3% |
| Completed masters | 0.0% | 8.1% | 11.5% |
| Completed professional degree | 0.0% | 2.5% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Goodwill. Using the proficiency score averages, the average test scores for Goodwill, SD schools is n/a. The average student to teacher ratio is n/a. In Goodwill, SD, an average of 72.8% of students have completed 8th grade and an average of 69.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Browns Valley, MN | 595 | 51% | 6.3% |
| Wilmot, SD | 554 | 37% | 22.2% |
| Sisseton, SD | 2,539 | 35% | 28.1% |
| Agency Village, SD | 970 | 4% | 91.7% |
| Goodwill, SD | 696 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Mora, NM | 696 | 18% | 63.2% |
| Puryear, TN | 696 | 37% | 22.9% |
| Aguanga, CA | 696 | 47% | 2.1% |
| Suttons Bay, MI | 696 | 32% | 33.0% |
| Cambria, WI | 695 | 35% | 28.1% |
| Goodwill, SD | 696 | n/a |
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