| Index | Dunellen | New Jersey | National |
| Average Test Scores | 43% | 52% | 48% |
| Student/Teacher ratio | 12:1 | 13:1 | 16:1 |
| Total public schools | 3 | 1,604 | 79,221 |
| Total private schools | n/a | 823 | 24,874 |
| Total post-secondary schools | n/a | 157 | 7,963 |
| Index | Dunellen | New Jersey | National |
| Completed 8th grade | 86.0% | 87.5% | 84.3% |
| Completed high school | 83.1% | 86.3% | 83.0% |
| Completed some college | 55.4% | 60.7% | 59.4% |
| Completed associate degree | 38.6% | 43.9% | 38.5% |
| Completed bachelors | 30.0% | 37.5% | 30.3% |
| Completed masters | 10.0% | 14.4% | 11.5% |
| Completed professional degree | 3.9% | 4.0% | 3.3% |
| Completed doctorate | 1.5% | 1.5% | 1.3% |
There are a total of 3 public schools, n/a private schools and n/a post-secondary schools in Dunellen. Using the proficiency score averages, the average test scores for Dunellen, NJ schools is 43%. The average student to teacher ratio is 12:1. In Dunellen, NJ, an average of 86.0% of students have completed 8th grade and an average of 83.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Short Hills, NJ | 13,700 | 83% | 73.8% |
| Summit, NJ | 21,913 | 81% | 69.3% |
| Bradley Gardens, NJ | 14,714 | 81% | 68.2% |
| New Providence, NJ | 13,382 | 80% | 66.4% |
| Chatham, NJ | 8,729 | 79% | 64.9% |
| Dunellen, NJ | 7,215 | 43% | 10.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Umatilla, OR | 7,215 | 27% | 44.4% |
| Riverdale Park, MD | 7,216 | 32% | 34.4% |
| Neptune Beach, FL | 7,214 | 70% | 46.4% |
| Lago Vista, TX | 7,212 | 60% | 25.5% |
| Seward, NE | 7,210 | 71% | 47.6% |
| Dunellen, NJ | 7,215 | 43% | 10.1% |
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