| Index | Harlingen | New Jersey | National |
| Average Test Scores | n/a | 52% | 48% |
| Student/Teacher ratio | n/a | 13:1 | 16:1 |
| Total public schools | n/a | 1,604 | 79,221 |
| Total private schools | n/a | 823 | 24,874 |
| Total post-secondary schools | n/a | 157 | 7,963 |
| Index | Harlingen | New Jersey | National |
| Completed 8th grade | 94.6% | 87.5% | 84.3% |
| Completed high school | 94.6% | 86.3% | 83.0% |
| Completed some college | 85.7% | 60.7% | 59.4% |
| Completed associate degree | 70.1% | 43.9% | 38.5% |
| Completed bachelors | 63.9% | 37.5% | 30.3% |
| Completed masters | 12.2% | 14.4% | 11.5% |
| Completed professional degree | 5.4% | 4.0% | 3.3% |
| Completed doctorate | 5.4% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Harlingen. Using the proficiency score averages, the average test scores for Harlingen, NJ schools is n/a. The average student to teacher ratio is n/a. In Harlingen, NJ, an average of 94.6% of students have completed 8th grade and an average of 94.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Cranbury, NJ | 2,213 | 81% | 68.8% |
| Bradley Gardens, NJ | 14,714 | 81% | 68.2% |
| Annandale, NJ | 1,794 | 79% | 63.5% |
| Plainsboro Center, NJ | 2,715 | 77% | 60.4% |
| Skillman, NJ | 476 | 77% | 60.2% |
| Harlingen, NJ | 481 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Tropic, UT | 481 | 36% | 25.5% |
| Rayland, OH | 481 | 55% | 14.6% |
| Kensington, KS | 481 | 35% | 27.1% |
| Brunson, SC | 481 | 50% | 3.1% |
| Loganton, PA | 481 | 35% | 27.1% |
| Harlingen, NJ | 481 | n/a |
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