| Index | Clayton | New Jersey | National |
| Average Test Scores | 30% | 52% | 48% |
| Student/Teacher ratio | 14:1 | 13:1 | 16:1 |
| Total public schools | 3 | 1,604 | 79,221 |
| Total private schools | 1 | 823 | 24,874 |
| Total post-secondary schools | n/a | 157 | 7,963 |
| Index | Clayton | New Jersey | National |
| Completed 8th grade | 84.8% | 87.5% | 84.3% |
| Completed high school | 84.3% | 86.3% | 83.0% |
| Completed some college | 44.9% | 60.7% | 59.4% |
| Completed associate degree | 30.9% | 43.9% | 38.5% |
| Completed bachelors | 23.8% | 37.5% | 30.3% |
| Completed masters | 6.9% | 14.4% | 11.5% |
| Completed professional degree | 2.3% | 4.0% | 3.3% |
| Completed doctorate | 0.4% | 1.5% | 1.3% |
There are a total of 3 public schools, 1 private schools and n/a post-secondary schools in Clayton. Using the proficiency score averages, the average test scores for Clayton, NJ schools is 30%. The average student to teacher ratio is 14:1. In Clayton, NJ, an average of 84.8% of students have completed 8th grade and an average of 84.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Barclay, NJ | 4,044 | 80% | 65.6% |
| Voorhees, NJ | 1,686 | 67% | 40.5% |
| Springdale, NJ | 14,111 | 67% | 38.5% |
| Mullica Hill, NJ | 3,605 | 66% | 37.0% |
| Haddon Heights, NJ | 7,520 | 66% | 36.5% |
| Clayton, NJ | 8,688 | 30% | 37.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Sandpoint, ID | 8,692 | 50% | 4.2% |
| Franklin, NH | 8,695 | 27% | 44.0% |
| Midway City, CA | 8,681 | 58% | 21.5% |
| Matawan, NJ | 8,696 | 62% | 28.5% |
| Cresskill, NJ | 8,701 | 76% | 57.6% |
| Clayton, NJ | 8,688 | 30% | 37.2% |
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