| Index | Hillside Lake | New York | National |
| Average Test Scores | n/a | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | n/a | 4,060 | 79,221 |
| Total private schools | n/a | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Hillside Lake | New York | National |
| Completed 8th grade | 94.4% | 83.5% | 84.3% |
| Completed high school | 94.4% | 82.1% | 83.0% |
| Completed some college | 62.3% | 59.5% | 59.4% |
| Completed associate degree | 35.7% | 43.4% | 38.5% |
| Completed bachelors | 26.6% | 34.7% | 30.3% |
| Completed masters | 13.2% | 15.1% | 11.5% |
| Completed professional degree | 1.1% | 4.2% | 3.3% |
| Completed doctorate | 1.1% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Hillside Lake. Using the proficiency score averages, the average test scores for Hillside Lake, NY schools is n/a. The average student to teacher ratio is n/a. In Hillside Lake, NY, an average of 94.4% of students have completed 8th grade and an average of 94.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Carmel Hamlet, NY | 6,278 | 99% | 105.2% |
| Cold Spring, NY | 1,911 | 81% | 68.2% |
| Firthcliffe, NY | 5,051 | 77% | 60.4% |
| Hopewell Junction, NY | 725 | 74% | 54.9% |
| Pawling, NY | 2,105 | 68% | 42.0% |
| Hillside Lake, NY | 1,291 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Lapwai, ID | 1,291 | 25% | 49.0% |
| Toulon, IL | 1,291 | 26% | 45.8% |
| Bylas, AZ | 1,290 | 20% | 58.3% |
| Platte, SD | 1,290 | 65% | 34.9% |
| Baltic, CT | 1,290 | 32% | 33.3% |
| Hillside Lake, NY | 1,291 | n/a |
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