| Index | San Mar | Maryland | National |
| Average Test Scores | n/a | 40% | 48% |
| Student/Teacher ratio | n/a | 16:1 | 16:1 |
| Total public schools | n/a | 1,163 | 79,221 |
| Total private schools | n/a | 674 | 24,874 |
| Total post-secondary schools | n/a | 112 | 7,963 |
| Index | San Mar | Maryland | National |
| Completed 8th grade | 79.1% | 87.5% | 84.3% |
| Completed high school | 68.9% | 86.5% | 83.0% |
| Completed some college | 26.6% | 64.2% | 59.4% |
| Completed associate degree | 9.6% | 44.8% | 38.5% |
| Completed bachelors | 8.5% | 38.4% | 30.3% |
| Completed masters | 0.0% | 17.7% | 11.5% |
| Completed professional degree | 0.0% | 5.5% | 3.3% |
| Completed doctorate | 0.0% | 2.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in San Mar. Using the proficiency score averages, the average test scores for San Mar, MD schools is n/a. The average student to teacher ratio is n/a. In San Mar, MD, an average of 79.1% of students have completed 8th grade and an average of 68.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Middletown, MD | 4,694 | 69% | 44.4% |
| Sabillasville, MD | 390 | 65% | 35.4% |
| Waynesboro, PA | 10,898 | 61% | 27.8% |
| Boonsboro, MD | 3,594 | 60% | 25.5% |
| Jefferson, MD | 2,577 | 58% | 20.8% |
| San Mar, MD | 318 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Brooker, FL | 319 | 50% | 4.2% |
| Polk, NE | 319 | 50% | 4.2% |
| Holland Patent, NY | 317 | 65% | 35.1% |
| Taylorsville, GA | 319 | 54% | 11.5% |
| Maunaloa, HI | 317 | 20% | 58.3% |
| San Mar, MD | 318 | n/a |
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