| Index | Marlborough | Massachusetts | National |
| Average Test Scores | 50% | 52% | 48% |
| Student/Teacher ratio | 13:1 | 14:1 | 16:1 |
| Total public schools | 8 | 1,167 | 79,221 |
| Total private schools | 7 | 508 | 24,874 |
| Total post-secondary schools | 1 | 193 | 7,963 |
| Index | Marlborough | Massachusetts | National |
| Completed 8th grade | 87.9% | 88.3% | 84.3% |
| Completed high school | 86.7% | 87.2% | 83.0% |
| Completed some college | 61.1% | 65.0% | 59.4% |
| Completed associate degree | 46.0% | 49.0% | 38.5% |
| Completed bachelors | 38.1% | 41.2% | 30.3% |
| Completed masters | 15.6% | 18.2% | 11.5% |
| Completed professional degree | 3.8% | 5.4% | 3.3% |
| Completed doctorate | 2.0% | 2.6% | 1.3% |
There are a total of 8 public schools, 7 private schools and 1 post-secondary schools in Marlborough. Using the proficiency score averages, the average test scores for Marlborough, MA schools is 50%. The average student to teacher ratio is 13:1. In Marlborough, MA, an average of 87.9% of students have completed 8th grade and an average of 86.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Dover, MA | 2,518 | 85% | 77.4% |
| Hopkinton, MA | 3,864 | 82% | 69.8% |
| West Concord, MA | 7,294 | 81% | 67.7% |
| Wellesley, MA | 28,747 | 80% | 66.0% |
| Cochituate, MA | 6,730 | 78% | 61.5% |
| Marlborough, MA | 39,663 | 50% | 4.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Indian Trail, NC | 39,644 | 55% | 14.1% |
| Romeoville, IL | 39,644 | 36% | 24.1% |
| Crystal Lake, IL | 39,685 | 46% | 3.9% |
| Royal Palm Beach, FL | 39,615 | 66% | 37.4% |
| Sumter, SC | 39,758 | 32% | 34.1% |
| Marlborough, MA | 39,663 | 50% | 4.0% |
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