| Index | Adelphi | Ohio | National |
| Average Test Scores | n/a | 61% | 48% |
| Student/Teacher ratio | n/a | 17:1 | 16:1 |
| Total public schools | n/a | 3,650 | 79,221 |
| Total private schools | n/a | 1,000 | 24,874 |
| Total post-secondary schools | n/a | 393 | 7,963 |
| Index | Adelphi | Ohio | National |
| Completed 8th grade | 66.5% | 86.9% | 84.3% |
| Completed high school | 66.5% | 85.6% | 83.0% |
| Completed some college | 24.0% | 55.7% | 59.4% |
| Completed associate degree | 9.5% | 35.1% | 38.5% |
| Completed bachelors | 5.5% | 26.7% | 30.3% |
| Completed masters | 0.0% | 10.0% | 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 Adelphi. Using the proficiency score averages, the average test scores for Adelphi, OH schools is n/a. The average student to teacher ratio is n/a. In Adelphi, OH, an average of 66.5% of students have completed 8th grade and an average of 66.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Kingston, OH | 941 | 69% | 42.7% |
| Sugar Grove, OH | 363 | 68% | 40.6% |
| Amanda, OH | 929 | 64% | 33.0% |
| Laurelville, OH | 525 | 62% | 29.2% |
| Circleville, OH | 13,986 | 62% | 29.0% |
| Adelphi, OH | 371 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Kendrick, ID | 371 | 45% | 6.3% |
| Florence, SD | 371 | 46% | 5.2% |
| Monterey, LA | 371 | 86% | 78.1% |
| Bear Lake, MI | 371 | 46% | 4.2% |
| Royal, IL | 370 | 65% | 35.4% |
| Adelphi, OH | 371 | n/a |
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