| Index | Jarrettsville | Maryland | National |
| Average Test Scores | 63% | 40% | 48% |
| Student/Teacher ratio | 16:1 | 16:1 | 16:1 |
| Total public schools | 2 | 1,163 | 79,221 |
| Total private schools | 1 | 674 | 24,874 |
| Total post-secondary schools | n/a | 112 | 7,963 |
| Index | Jarrettsville | Maryland | National |
| Completed 8th grade | 97.1% | 87.5% | 84.3% |
| Completed high school | 93.8% | 86.5% | 83.0% |
| Completed some college | 61.9% | 64.2% | 59.4% |
| Completed associate degree | 44.5% | 44.8% | 38.5% |
| Completed bachelors | 40.3% | 38.4% | 30.3% |
| Completed masters | 14.9% | 17.7% | 11.5% |
| Completed professional degree | 2.9% | 5.5% | 3.3% |
| Completed doctorate | 0.0% | 2.5% | 1.3% |
There are a total of 2 public schools, 1 private schools and n/a post-secondary schools in Jarrettsville. Using the proficiency score averages, the average test scores for Jarrettsville, MD schools is 63%. The average student to teacher ratio is 16:1. In Jarrettsville, MD, an average of 97.1% of students have completed 8th grade and an average of 93.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Perry Hall, MD | 27,778 | 70% | 46.4% |
| Kingsville, MD | 4,649 | 70% | 44.8% |
| Fallston, MD | 9,118 | 68% | 41.7% |
| Stewartstown, PA | 1,751 | 67% | 39.6% |
| Lutherville, MD | 6,715 | 67% | 39.2% |
| Jarrettsville, MD | 2,827 | 63% | 30.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Holualoa, HI | 2,827 | 46% | 4.2% |
| Kings Beach, CA | 2,826 | 47% | 2.1% |
| Sheridan, IL | 2,829 | 40% | 16.7% |
| David City, NE | 2,824 | 63% | 31.8% |
| Hortonville, WI | 2,830 | 44% | 9.4% |
| Jarrettsville, MD | 2,827 | 63% | 30.7% |
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