| Index | Diaz | 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 | Diaz | Arkansas | National |
| Completed 8th grade | 70.3% | 80.7% | 84.3% |
| Completed high school | 68.5% | 79.0% | 83.0% |
| Completed some college | 40.4% | 50.5% | 59.4% |
| Completed associate degree | 23.5% | 27.9% | 38.5% |
| Completed bachelors | 13.4% | 21.5% | 30.3% |
| Completed masters | 2.5% | 7.6% | 11.5% |
| Completed professional degree | 0.9% | 2.2% | 3.3% |
| Completed doctorate | 0.9% | 0.9% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Diaz. Using the proficiency score averages, the average test scores for Diaz, AR schools is n/a. The average student to teacher ratio is n/a. In Diaz, AR, an average of 70.3% of students have completed 8th grade and an average of 68.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Sulphur Rock, AR | 598 | 70% | 44.8% |
| Swifton, AR | 1,207 | 62% | 29.2% |
| Tuckerman, AR | 1,784 | 57% | 18.8% |
| Newark, AR | 1,329 | 40% | 16.1% |
| Newport, AR | 7,828 | 34% | 30.2% |
| Diaz, AR | 1,469 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Black River, NY | 1,469 | 37% | 22.9% |
| South Coventry, CT | 1,470 | 73% | 51.4% |
| Ilwaco, WA | 1,470 | 40% | 16.0% |
| Quincy, MI | 1,470 | 42% | 11.8% |
| Manson, WA | 1,468 | 41% | 13.9% |
| Diaz, AR | 1,469 | n/a |
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