| 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 | 5,769 | 87% | 81.3% |
| Bryn Mawr, PA | 5,611 | 86% | 78.1% |
| Ardmore, PA | 13,567 | 85% | 77.1% |
| Narberth, PA | 4,304 | 81% | 68.8% |
| Malvern, PA | 3,445 | 79% | 64.2% |
| Greenwich, NJ | 2,747 | 60% | 25.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Thermopolis, WY | 2,747 | 60% | 24.3% |
| Marshville, NC | 2,748 | 41% | 15.1% |
| Marietta, OK | 2,746 | 22% | 53.4% |
| Tompkinsville, KY | 2,748 | 61% | 26.3% |
| Refugio, TX | 2,748 | 41% | 15.3% |
| Greenwich, NJ | 2,747 | 60% | 25.0% |
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