| Index | Promise City | Iowa | National |
| Average Test Scores | n/a | 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 | Promise City | Iowa | National |
| Completed 8th grade | 76.3% | 89.2% | 84.3% |
| Completed high school | 71.3% | 87.7% | 83.0% |
| Completed some college | 33.8% | 59.8% | 59.4% |
| Completed associate degree | 11.3% | 38.4% | 38.5% |
| Completed bachelors | 6.3% | 27.2% | 30.3% |
| Completed masters | 0.0% | 8.7% | 11.5% |
| Completed professional degree | 0.0% | 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 Promise City. Using the proficiency score averages, the average test scores for Promise City, IA schools is n/a. The average student to teacher ratio is n/a. In Promise City, IA, an average of 76.3% of students have completed 8th grade and an average of 71.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Corydon, IA | 1,659 | 73% | 52.6% |
| Centerville, IA | 5,433 | 70% | 44.8% |
| Seymour, IA | 521 | 52% | 8.3% |
| Promise City, IA | 72 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Tuskahoma, OK | 73 | 13% | 74.0% |
| Lamont, WA | 71 | 35% | 27.1% |
| Kim, CO | 71 | 45% | 6.3% |
| Twin Hills, AK | 71 | 20% | 58.3% |
| Wikieup, AZ | 71 | 50% | 4.2% |
| Promise City, IA | 72 | n/a |
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