| Index | Clay Center | 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 | Clay Center | Ohio | National |
| Completed 8th grade | 95.8% | 86.9% | 84.3% |
| Completed high school | 95.8% | 85.6% | 83.0% |
| Completed some college | 33.8% | 55.7% | 59.4% |
| Completed associate degree | 16.7% | 35.1% | 38.5% |
| Completed bachelors | 9.3% | 26.7% | 30.3% |
| Completed masters | 4.2% | 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 Clay Center. Using the proficiency score averages, the average test scores for Clay Center, OH schools is n/a. The average student to teacher ratio is n/a. In Clay Center, OH, an average of 95.8% of students have completed 8th grade and an average of 95.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Perrysburg, OH | 21,566 | 88% | 83.3% |
| Lindsey, OH | 422 | 88% | 82.3% |
| Oak Harbor, OH | 2,708 | 83% | 72.2% |
| Pemberville, OH | 1,431 | 81% | 69.4% |
| Curtice, OH | 1,251 | 77% | 60.4% |
| Clay Center, OH | 400 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Thackerville, OK | 400 | 25% | 47.9% |
| Lubec, ME | 400 | 70% | 45.8% |
| Latexo, TX | 400 | 45% | 7.3% |
| West Chazy, NY | 400 | 51% | 5.2% |
| Bruceville, IN | 400 | 47% | 3.1% |
| Clay Center, OH | 400 | n/a |
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