| Index | Greenwood Lake | New York | National |
| Average Test Scores | 75% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 2 | 4,060 | 79,221 |
| Total private schools | n/a | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Greenwood Lake | New York | National |
| Completed 8th grade | 93.2% | 83.5% | 84.3% |
| Completed high school | 90.4% | 82.1% | 83.0% |
| Completed some college | 63.9% | 59.5% | 59.4% |
| Completed associate degree | 42.3% | 43.4% | 38.5% |
| Completed bachelors | 22.4% | 34.7% | 30.3% |
| Completed masters | 11.0% | 15.1% | 11.5% |
| Completed professional degree | 0.8% | 4.2% | 3.3% |
| Completed doctorate | 0.8% | 1.5% | 1.3% |
There are a total of 2 public schools, n/a private schools and n/a post-secondary schools in Greenwood Lake. Using the proficiency score averages, the average test scores for Greenwood Lake, NY schools is 75%. The average student to teacher ratio is n/a. In Greenwood Lake, NY, an average of 93.2% of students have completed 8th grade and an average of 90.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Saddle River, NJ | 3,180 | 85% | 76.0% |
| Upper Saddle River, NJ | 8,214 | 84% | 75.0% |
| Allendale, NJ | 6,757 | 83% | 73.3% |
| Woodcliff Lake, NJ | 5,836 | 81% | 68.2% |
| Montvale, NJ | 8,538 | 76% | 58.0% |
| Greenwood Lake, NY | 3,080 | 75% | 56.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Clayton, NM | 3,079 | 37% | 22.9% |
| Calera, OK | 3,082 | 26% | 45.8% |
| Niantic, CT | 3,083 | 77% | 59.4% |
| Hampton, SC | 3,077 | 41% | 14.1% |
| Brazoria, TX | 3,077 | 35% | 28.1% |
| Greenwood Lake, NY | 3,080 | 75% | 56.3% |
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