| Index | Greenwich | New Jersey | National |
| Average Test Scores | 60% | 52% | 48% |
| Student/Teacher ratio | n/a | 13:1 | 16:1 |
| Total public schools | n/a | 1,604 | 79,221 |
| Total private schools | n/a | 823 | 24,874 |
| Total post-secondary schools | n/a | 157 | 7,963 |


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| Index | Greenwich | New Jersey | National |
| Completed 8th grade | 96.5% | 87.5% | 84.3% |
| Completed high school | 96.5% | 86.3% | 83.0% |
| Completed some college | 88.5% | 60.7% | 59.4% |
| Completed associate degree | 74.7% | 43.9% | 38.5% |
| Completed bachelors | 62.2% | 37.5% | 30.3% |
| Completed masters | 26.7% | 14.4% | 11.5% |
| Completed professional degree | 7.0% | 4.0% | 3.3% |
| Completed doctorate | 3.0% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Greenwich. Using the proficiency score averages, the average test scores for Greenwich, NJ schools is 60%. The average student to teacher ratio is n/a. In Greenwich, NJ, an average of 96.5% of students have completed 8th grade and an average of 96.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Penn Wynne, PA | 5,906 | 87% | 81.3% |
| Bryn Mawr, PA | 5,819 | 86% | 78.1% |
| Ardmore, PA | 13,882 | 85% | 77.1% |
| Narberth, PA | 4,434 | 81% | 68.8% |
| Malvern, PA | 3,530 | 79% | 64.2% |
| Greenwich, NJ | 2,805 | 60% | 25.0% |
| City | Population | Avg. Test Scores | National Avg. |
| East Dublin, GA | 2,805 | 45% | 7.3% |
| Marquette Heights, IL | 2,805 | 35% | 28.1% |
| Peterborough, NH | 2,805 | 49% | 2.4% |
| Cokato, MN | 2,804 | 53% | 10.2% |
| Sylva, NC | 2,804 | 42% | 11.8% |
| Greenwich, NJ | 2,805 | 60% | 25.0% |