| Index | Harriman | New York | National |
| Average Test Scores | n/a | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 1 | 4,060 | 79,221 |
| Total private schools | n/a | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Harriman | New York | National |
| Completed 8th grade | 90.0% | 83.5% | 84.3% |
| Completed high school | 88.1% | 82.1% | 83.0% |
| Completed some college | 56.9% | 59.5% | 59.4% |
| Completed associate degree | 41.6% | 43.4% | 38.5% |
| Completed bachelors | 28.3% | 34.7% | 30.3% |
| Completed masters | 9.1% | 15.1% | 11.5% |
| Completed professional degree | 1.9% | 4.2% | 3.3% |
| Completed doctorate | 0.7% | 1.5% | 1.3% |
There are a total of 1 public schools, n/a private schools and n/a post-secondary schools in Harriman. Using the proficiency score averages, the average test scores for Harriman, NY schools is n/a. The average student to teacher ratio is n/a. In Harriman, NY, an average of 90.0% of students have completed 8th grade and an average of 88.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Fort Montgomery, NY | 1,867 | 94% | 94.8% |
| Cold Spring, NY | 1,911 | 81% | 68.2% |
| Croton-on-Hudson, NY | 8,121 | 78% | 62.8% |
| Firthcliffe, NY | 5,051 | 77% | 60.4% |
| Montrose, NY | 3,428 | 75% | 56.8% |
| Harriman, NY | 2,996 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Hennessey, OK | 2,996 | 33% | 30.9% |
| Pembroke, NC | 2,997 | 26% | 45.4% |
| Prescott, AR | 2,995 | 29% | 39.6% |
| Magnolia, MS | 2,998 | 24% | 51.0% |
| Soda Springs, ID | 2,994 | 48% | 0.7% |
| Harriman, NY | 2,996 | n/a |
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