| Index | Newmarket | New Hampshire | National |
| Average Test Scores | 56% | 52% | 48% |
| Student/Teacher ratio | 13:1 | 13:1 | 16:1 |
| Total public schools | 3 | 234 | 79,221 |
| Total private schools | 1 | 144 | 24,874 |
| Total post-secondary schools | n/a | 40 | 7,963 |
| Index | Newmarket | New Hampshire | National |
| Completed 8th grade | 88.5% | 89.5% | 84.3% |
| Completed high school | 88.1% | 88.4% | 83.0% |
| Completed some college | 69.1% | 64.2% | 59.4% |
| Completed associate degree | 52.2% | 45.3% | 38.5% |
| Completed bachelors | 43.2% | 35.5% | 30.3% |
| Completed masters | 15.6% | 13.4% | 11.5% |
| Completed professional degree | 3.1% | 3.3% | 3.3% |
| Completed doctorate | 1.8% | 1.4% | 1.3% |
There are a total of 3 public schools, 1 private schools and n/a post-secondary schools in Newmarket. Using the proficiency score averages, the average test scores for Newmarket, NH schools is 56%. The average student to teacher ratio is 13:1. In Newmarket, NH, an average of 88.5% of students have completed 8th grade and an average of 88.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Durham, NH | 12,016 | 76% | 57.8% |
| Portsmouth, NH | 21,418 | 75% | 55.8% |
| Hampton, NH | 10,002 | 70% | 45.1% |
| Kittery Point, ME | 1,034 | 65% | 34.4% |
| South Eliot, ME | 3,047 | 60% | 25.0% |
| Newmarket, NH | 5,737 | 56% | 15.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Schriever, LA | 5,734 | 75% | 55.7% |
| Nolanville, TX | 5,732 | 50% | 3.6% |
| New Brighton, PA | 5,731 | 50% | 4.2% |
| Lewisburg, PA | 5,730 | 76% | 57.3% |
| Estherville, IA | 5,729 | 57% | 18.1% |
| Newmarket, NH | 5,737 | 56% | 15.6% |
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