| Index | Clay Center | Kansas | National |
| Average Test Scores | 44% | 35% | 48% |
| Student/Teacher ratio | 12:1 | 14:1 | 16:1 |
| Total public schools | 4 | 970 | 79,221 |
| Total private schools | n/a | 190 | 24,874 |
| Total post-secondary schools | n/a | 86 | 7,963 |
| Index | Clay Center | Kansas | National |
| Completed 8th grade | 90.7% | 87.4% | 84.3% |
| Completed high school | 88.8% | 86.1% | 83.0% |
| Completed some college | 60.3% | 63.7% | 59.4% |
| Completed associate degree | 34.3% | 39.8% | 38.5% |
| Completed bachelors | 25.0% | 31.6% | 30.3% |
| Completed masters | 9.2% | 11.4% | 11.5% |
| Completed professional degree | 1.2% | 3.0% | 3.3% |
| Completed doctorate | 0.7% | 1.2% | 1.3% |
There are a total of 4 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, KS schools is 44%. The average student to teacher ratio is 12:1. In Clay Center, KS, an average of 90.7% of students have completed 8th grade and an average of 88.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Milford, KS | 347 | 35% | 27.1% |
| Clifton, KS | 393 | 35% | 27.6% |
| Clyde, KS | 806 | 25% | 47.9% |
| Wakefield, KS | 952 | 20% | 58.9% |
| Clay Center, KS | 4,007 | 44% | 8.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Greencastle, PA | 4,008 | 69% | 44.4% |
| Fredericktown, MO | 4,006 | 42% | 12.5% |
| Akron, PA | 4,006 | 65% | 34.4% |
| Centerville, MN | 4,006 | 82% | 70.8% |
| Esparto, CA | 4,009 | 27% | 44.1% |
| Clay Center, KS | 4,007 | 44% | 8.6% |
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