| 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 | 4,454 | 98% | 103.1% |
| Teterboro, NJ | 110 | 95% | 96.9% |
| Bronxville, NY | 6,450 | 88% | 82.3% |
| Scarsdale, NY | 17,890 | 87% | 81.8% |
| Alpine, NJ | 1,459 | 87% | 81.3% |
| Harrington Park, NJ | 4,735 | 79% | 63.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Franklin, NJ | 4,737 | 51% | 6.3% |
| Bigfork, MT | 4,733 | 53% | 10.6% |
| Crystal City, MO | 4,733 | 47% | 3.1% |
| Dundee, FL | 4,738 | 48% | 0.7% |
| Morganville, NJ | 4,738 | 75% | 56.6% |
| Harrington Park, NJ | 4,735 | 79% | 63.5% |
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