| Index | Diamond City | Arkansas | National |
| Average Test Scores | n/a | 45% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 860 | 79,221 |
| Total private schools | n/a | 165 | 24,874 |
| Total post-secondary schools | n/a | 98 | 7,963 |
| Index | Diamond City | Arkansas | National |
| Completed 8th grade | 78.6% | 80.7% | 84.3% |
| Completed high school | 73.6% | 79.0% | 83.0% |
| Completed some college | 41.2% | 50.5% | 59.4% |
| Completed associate degree | 15.3% | 27.9% | 38.5% |
| Completed bachelors | 8.6% | 21.5% | 30.3% |
| Completed masters | 3.1% | 7.6% | 11.5% |
| Completed professional degree | 0.7% | 2.2% | 3.3% |
| Completed doctorate | 0.7% | 0.9% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Diamond City. Using the proficiency score averages, the average test scores for Diamond City, AR schools is n/a. The average student to teacher ratio is n/a. In Diamond City, AR, an average of 78.6% of students have completed 8th grade and an average of 73.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Harrison, AR | 13,124 | 62% | 29.6% |
| Kirbyville, MO | 152 | 55% | 14.1% |
| Lead Hill, AR | 244 | 41% | 15.1% |
| Theodosia, MO | 116 | 23% | 53.1% |
| Diamond City, AR | 982 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Correctionville, IA | 982 | 67% | 39.6% |
| Seneca, PA | 982 | 58% | 19.8% |
| Plainfield, WI | 981 | 34% | 29.5% |
| Mechanicsville, IA | 983 | 65% | 34.4% |
| Gadsden, SC | 983 | 35% | 28.1% |
| Diamond City, AR | 982 | n/a |
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