| Index | Sussex | New Jersey | National |
| Average Test Scores | 48% | 52% | 48% |
| Student/Teacher ratio | 12:1 | 13:1 | 16:1 |
| Total public schools | 2 | 1,604 | 79,221 |
| Total private schools | 1 | 823 | 24,874 |
| Total post-secondary schools | 1 | 157 | 7,963 |
| Index | Sussex | New Jersey | National |
| Completed 8th grade | 80.6% | 87.5% | 84.3% |
| Completed high school | 78.2% | 86.3% | 83.0% |
| Completed some college | 45.5% | 60.7% | 59.4% |
| Completed associate degree | 20.3% | 43.9% | 38.5% |
| Completed bachelors | 13.5% | 37.5% | 30.3% |
| Completed masters | 3.7% | 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, 1 private schools and 1 post-secondary schools in Sussex. Using the proficiency score averages, the average test scores for Sussex, NJ schools is 48%. The average student to teacher ratio is 12:1. In Sussex, NJ, an average of 80.6% of students have completed 8th grade and an average of 78.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Warwick, NY | 7,019 | 71% | 47.9% |
| Lake Mohawk, NJ | 9,397 | 70% | 45.8% |
| Milford, PA | 1,432 | 68% | 41.1% |
| Matamoras, PA | 2,330 | 67% | 38.5% |
| Florida, NY | 2,974 | 66% | 37.0% |
| Sussex, NJ | 1,894 | 48% | 1.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Lewisport, KY | 1,894 | 49% | 1.0% |
| Adams, NY | 1,894 | 66% | 37.0% |
| Ridgeville, SC | 1,893 | 45% | 7.3% |
| Washburn, WI | 1,893 | 42% | 12.2% |
| Capac, MI | 1,895 | 40% | 16.3% |
| Sussex, NJ | 1,894 | 48% | 1.0% |
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