| Index | Diamondhead | Mississippi | National |
| Average Test Scores | n/a | 40% | 48% |
| Student/Teacher ratio | n/a | 16:1 | 16:1 |
| Total public schools | n/a | 893 | 79,221 |
| Total private schools | n/a | 206 | 24,874 |
| Total post-secondary schools | n/a | 68 | 7,963 |
| Index | Diamondhead | Mississippi | National |
| Completed 8th grade | 95.0% | 78.6% | 84.3% |
| Completed high school | 95.0% | 76.7% | 83.0% |
| Completed some college | 75.9% | 52.5% | 59.4% |
| Completed associate degree | 50.6% | 29.8% | 38.5% |
| Completed bachelors | 40.9% | 21.0% | 30.3% |
| Completed masters | 17.7% | 7.9% | 11.5% |
| Completed professional degree | 3.9% | 2.2% | 3.3% |
| Completed doctorate | 1.0% | 0.9% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Diamondhead. Using the proficiency score averages, the average test scores for Diamondhead, MS schools is n/a. The average student to teacher ratio is n/a. In Diamondhead, MS, an average of 95.0% of students have completed 8th grade and an average of 95.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Long Beach, MS | 15,829 | 63% | 31.7% |
| Pass Christian, MS | 6,079 | 61% | 27.5% |
| Kiln, MS | 2,462 | 59% | 23.2% |
| Bay St. Louis, MS | 13,539 | 49% | 2.9% |
| Diamondhead, MS | 8,076 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Trinidad, CO | 8,076 | 27% | 44.3% |
| Menominee, MI | 8,079 | 34% | 28.4% |
| Hillsdale, MI | 8,073 | 45% | 6.7% |
| Maplewood, MO | 8,073 | 61% | 26.6% |
| Madison Park, NJ | 8,079 | 60% | 24.0% |
| Diamondhead, MS | 8,076 | n/a |
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