| Index | Elmer | New Jersey | National |
| Average Test Scores | n/a | 52% | 48% |
| Student/Teacher ratio | 8:1 | 13:1 | 16:1 |
| Total public schools | 2 | 1,604 | 79,221 |
| Total private schools | n/a | 823 | 24,874 |
| Total post-secondary schools | n/a | 157 | 7,963 |
| Index | Elmer | New Jersey | National |
| Completed 8th grade | 89.7% | 87.5% | 84.3% |
| Completed high school | 89.3% | 86.3% | 83.0% |
| Completed some college | 52.9% | 60.7% | 59.4% |
| Completed associate degree | 30.9% | 43.9% | 38.5% |
| Completed bachelors | 21.3% | 37.5% | 30.3% |
| Completed masters | 6.0% | 14.4% | 11.5% |
| Completed professional degree | 0.0% | 4.0% | 3.3% |
| Completed doctorate | 0.0% | 1.5% | 1.3% |
There are a total of 2 public schools, n/a private schools and n/a post-secondary schools in Elmer. Using the proficiency score averages, the average test scores for Elmer, NJ schools is n/a. The average student to teacher ratio is 8:1. In Elmer, NJ, an average of 89.7% of students have completed 8th grade and an average of 89.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Beckett, NJ | 5,091 | 70% | 45.3% |
| Mullica Hill, NJ | 3,605 | 66% | 37.0% |
| Pedricktown, NJ | 384 | 65% | 34.4% |
| Wenonah, NJ | 2,255 | 57% | 17.7% |
| Williamstown, NJ | 14,161 | 55% | 13.9% |
| Elmer, NJ | 1,333 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Sardinia, OH | 1,333 | 70% | 44.8% |
| Des Arc, AR | 1,334 | 66% | 37.0% |
| Stamford, NY | 1,334 | 40% | 17.7% |
| Ortonville, MI | 1,334 | 46% | 3.9% |
| Kamiah, ID | 1,334 | 33% | 30.9% |
| Elmer, NJ | 1,333 | n/a |
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