| Index | Gaithersburg | Maryland | National |
| Average Test Scores | 44% | 40% | 48% |
| Student/Teacher ratio | 16:1 | 16:1 | 16:1 |
| Total public schools | 31 | 1,163 | 79,221 |
| Total private schools | 12 | 674 | 24,874 |
| Total post-secondary schools | 3 | 112 | 7,963 |
| Index | Gaithersburg | Maryland | National |
| Completed 8th grade | 86.8% | 87.5% | 84.3% |
| Completed high school | 86.0% | 86.5% | 83.0% |
| Completed some college | 73.3% | 64.2% | 59.4% |
| Completed associate degree | 59.2% | 44.8% | 38.5% |
| Completed bachelors | 54.0% | 38.4% | 30.3% |
| Completed masters | 27.1% | 17.7% | 11.5% |
| Completed professional degree | 9.2% | 5.5% | 3.3% |
| Completed doctorate | 5.1% | 2.5% | 1.3% |
There are a total of 31 public schools, 12 private schools and 3 post-secondary schools in Gaithersburg. Using the proficiency score averages, the average test scores for Gaithersburg, MD schools is 44%. The average student to teacher ratio is 16:1. In Gaithersburg, MD, an average of 86.8% of students have completed 8th grade and an average of 86.0% 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% |
| Ashburn, VA | 44,090 | 88% | 84.1% |
| Cascades, VA | 12,132 | 86% | 79.2% |
| North Potomac, MD | 24,146 | 83% | 71.9% |
| Gaithersburg, MD | 67,878 | 44% | 8.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Palatine, IL | 67,875 | 41% | 14.7% |
| Redmond, WA | 67,959 | 83% | 73.1% |
| Rogers, AR | 67,787 | 58% | 19.8% |
| Palo Alto, CA | 67,973 | 81% | 68.5% |
| Muncie, IN | 67,739 | 40% | 17.4% |
| Gaithersburg, MD | 67,878 | 44% | 8.8% |
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