| Index | Greenwich | New York | National |
| Average Test Scores | 62% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 2 | 4,060 | 79,221 |
| Total private schools | 1 | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Greenwich | New York | National |
| Completed 8th grade | 91.0% | 83.5% | 84.3% |
| Completed high school | 90.1% | 82.1% | 83.0% |
| Completed some college | 61.8% | 59.5% | 59.4% |
| Completed associate degree | 41.2% | 43.4% | 38.5% |
| Completed bachelors | 29.6% | 34.7% | 30.3% |
| Completed masters | 11.6% | 15.1% | 11.5% |
| Completed professional degree | 1.9% | 4.2% | 3.3% |
| Completed doctorate | 0.5% | 1.5% | 1.3% |
There are a total of 2 public schools, 1 private schools and n/a post-secondary schools in Greenwich. Using the proficiency score averages, the average test scores for Greenwich, NY schools is 62%. The average student to teacher ratio is n/a. In Greenwich, NY, an average of 91.0% of students have completed 8th grade and an average of 90.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Saratoga Springs, NY | 28,056 | 73% | 52.5% |
| Schuylerville, NY | 1,408 | 68% | 42.0% |
| Stillwater, NY | 1,959 | 64% | 32.8% |
| Cambridge, NY | 2,274 | 60% | 25.5% |
| Mechanicville, NY | 5,077 | 57% | 18.2% |
| Greenwich, NY | 2,083 | 62% | 28.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Blossburg, PA | 2,083 | 32% | 33.3% |
| Malone, FL | 2,084 | 65% | 34.4% |
| Bellevue, IA | 2,082 | 75% | 55.2% |
| Watervliet, MI | 2,082 | 37% | 22.7% |
| McCamey, TX | 2,084 | 38% | 21.9% |
| Greenwich, NY | 2,083 | 62% | 28.6% |
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