| Index | Londonderry | New Hampshire | National |
| Average Test Scores | 58% | 52% | 48% |
| Student/Teacher ratio | 17:1 | 13:1 | 16:1 |
| Total public schools | 6 | 234 | 79,221 |
| Total private schools | 7 | 144 | 24,874 |
| Total post-secondary schools | n/a | 40 | 7,963 |
| Index | Londonderry | New Hampshire | National |
| Completed 8th grade | 91.7% | 89.5% | 84.3% |
| Completed high school | 91.5% | 88.4% | 83.0% |
| Completed some college | 72.1% | 64.2% | 59.4% |
| Completed associate degree | 50.8% | 45.3% | 38.5% |
| Completed bachelors | 39.8% | 35.5% | 30.3% |
| Completed masters | 14.1% | 13.4% | 11.5% |
| Completed professional degree | 1.5% | 3.3% | 3.3% |
| Completed doctorate | 0.5% | 1.4% | 1.3% |
There are a total of 6 public schools, 7 private schools and n/a post-secondary schools in Londonderry. Using the proficiency score averages, the average test scores for Londonderry, NH schools is 58%. The average student to teacher ratio is 17:1. In Londonderry, NH, an average of 91.7% of students have completed 8th grade and an average of 91.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Andover, MA | 9,117 | 68% | 42.2% |
| Amherst, NH | 676 | 67% | 38.9% |
| Goffstown, NH | 2,930 | 62% | 29.2% |
| Pepperell, MA | 2,750 | 61% | 26.6% |
| East Merrimack, NH | 4,959 | 57% | 17.7% |
| Londonderry, NH | 12,432 | 58% | 21.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Haverstraw, NY | 12,431 | 24% | 50.0% |
| Cascades, VA | 12,431 | 86% | 79.2% |
| Mendota, CA | 12,436 | 40% | 16.7% |
| Green River, WY | 12,428 | 59% | 22.6% |
| Riverview, MI | 12,419 | 42% | 12.2% |
| Londonderry, NH | 12,432 | 58% | 21.0% |
Here are the best places to live in New Hampshire
Safest Cities In The US
Check out the 10 most dangerous cities in New Hampshire
These are the 10 cheapest cities in New Hampshire