| Index | Herndon | Virginia | National |
| Average Test Scores | 79% | 79% | 48% |
| Student/Teacher ratio | 14:1 | 13:1 | 16:1 |
| Total public schools | 12 | 1,596 | 79,221 |
| Total private schools | 10 | 553 | 24,874 |
| Total post-secondary schools | 2 | 199 | 7,963 |
| Index | Herndon | Virginia | National |
| Completed 8th grade | 84.0% | 85.9% | 84.3% |
| Completed high school | 82.5% | 84.7% | 83.0% |
| Completed some college | 65.3% | 64.1% | 59.4% |
| Completed associate degree | 52.6% | 44.2% | 38.5% |
| Completed bachelors | 48.4% | 36.9% | 30.3% |
| Completed masters | 21.5% | 15.7% | 11.5% |
| Completed professional degree | 3.2% | 4.2% | 3.3% |
| Completed doctorate | 1.8% | 1.7% | 1.3% |
There are a total of 12 public schools, 10 private schools and 2 post-secondary schools in Herndon. Using the proficiency score averages, the average test scores for Herndon, VA schools is 79%. The average student to teacher ratio is 14:1. In Herndon, VA, an average of 84.0% of students have completed 8th grade and an average of 82.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| McLean, VA | 48,566 | 95% | 97.1% |
| Great Falls, VA | 14,793 | 94% | 94.8% |
| Oakton, VA | 36,468 | 92% | 90.6% |
| Haymarket, VA | 1,485 | 90% | 88.2% |
| Burke, VA | 44,077 | 90% | 86.7% |
| Herndon, VA | 24,577 | 79% | 64.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Pooler, GA | 24,575 | 35% | 27.1% |
| Marysville, OH | 24,569 | 78% | 63.4% |
| Norton Shores, MI | 24,557 | 57% | 18.8% |
| Rockville Centre, NY | 24,552 | 79% | 65.5% |
| Medford, NY | 24,613 | 47% | 2.1% |
| Herndon, VA | 24,577 | 79% | 64.6% |
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