| Index | Harrington Park | New Jersey | National |
| Average Test Scores | 79% | 52% | 48% |
| Student/Teacher ratio | 15:1 | 13:1 | 16:1 |
| Total public schools | 1 | 1,604 | 79,221 |
| Total private schools | n/a | 823 | 24,874 |
| Total post-secondary schools | n/a | 157 | 7,963 |
| Index | Harrington Park | New Jersey | National |
| Completed 8th grade | 95.5% | 87.5% | 84.3% |
| Completed high school | 94.8% | 86.3% | 83.0% |
| Completed some college | 81.3% | 60.7% | 59.4% |
| Completed associate degree | 67.0% | 43.9% | 38.5% |
| Completed bachelors | 61.1% | 37.5% | 30.3% |
| Completed masters | 26.7% | 14.4% | 11.5% |
| Completed professional degree | 6.0% | 4.0% | 3.3% |
| Completed doctorate | 2.0% | 1.5% | 1.3% |
There are a total of 1 public schools, n/a private schools and n/a post-secondary schools in Harrington Park. Using the proficiency score averages, the average test scores for Harrington Park, NJ schools is 79%. The average student to teacher ratio is 15:1. In Harrington Park, NJ, an average of 95.5% of students have completed 8th grade and an average of 94.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Orangeburg, NY | 4,544 | 98% | 103.1% |
| Teterboro, NJ | 114 | 95% | 96.9% |
| Bronxville, NY | 6,682 | 88% | 82.3% |
| Scarsdale, NY | 18,390 | 87% | 81.8% |
| Alpine, NJ | 1,499 | 87% | 81.3% |
| Harrington Park, NJ | 4,882 | 79% | 63.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Lake Montezuma, AZ | 4,882 | 30% | 38.5% |
| Nelsonville, OH | 4,882 | 45% | 7.3% |
| Brent, AL | 4,882 | 32% | 33.3% |
| Smith Mills, MA | 4,885 | 47% | 2.1% |
| St. Clair, MO | 4,878 | 42% | 12.2% |
| Harrington Park, NJ | 4,882 | 79% | 63.5% |
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