| Index | Keystone | Iowa | National |
| Average Test Scores | 70% | 69% | 48% |
| Student/Teacher ratio | n/a | 13:1 | 16:1 |
| Total public schools | n/a | 1,101 | 79,221 |
| Total private schools | n/a | 208 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Keystone | Iowa | National |
| Completed 8th grade | 92.5% | 89.2% | 84.3% |
| Completed high school | 88.6% | 87.7% | 83.0% |
| Completed some college | 51.4% | 59.8% | 59.4% |
| Completed associate degree | 32.7% | 38.4% | 38.5% |
| Completed bachelors | 14.1% | 27.2% | 30.3% |
| Completed masters | 2.6% | 8.7% | 11.5% |
| Completed professional degree | 0.9% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Keystone. Using the proficiency score averages, the average test scores for Keystone, IA schools is 70%. The average student to teacher ratio is n/a. In Keystone, IA, an average of 92.5% of students have completed 8th grade and an average of 88.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Marengo, IA | 2,407 | 81% | 68.2% |
| Vinton, IA | 5,075 | 80% | 66.0% |
| Dysart, IA | 1,416 | 78% | 61.5% |
| Belle Plaine, IA | 2,419 | 73% | 52.6% |
| Van Horne, IA | 958 | 73% | 51.6% |
| Keystone, IA | 605 | 70% | 45.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Willsboro, NY | 605 | 47% | 2.1% |
| Augusta, IL | 605 | 30% | 38.5% |
| Maple Hill, KS | 605 | 70% | 45.8% |
| Boothville, LA | 605 | 82% | 70.8% |
| Cathlamet, WA | 605 | 53% | 9.9% |
| Keystone, IA | 605 | 70% | 45.8% |
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