| Index | Marlin | Texas | National |
| Average Test Scores | 19% | 47% | 48% |
| Student/Teacher ratio | 12:1 | 14:1 | 16:1 |
| Total public schools | 7 | 7,418 | 79,221 |
| Total private schools | 1 | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
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| Index | Marlin | Texas | National |
| Completed 8th grade | 64.9% | 79.3% | 84.3% |
| Completed high school | 62.4% | 77.8% | 83.0% |
| Completed some college | 32.9% | 57.3% | 59.4% |
| Completed associate degree | 12.4% | 34.9% | 38.5% |
| Completed bachelors | 8.7% | 28.1% | 30.3% |
| Completed masters | 3.2% | 9.6% | 11.5% |
| Completed professional degree | 1.0% | 2.6% | 3.3% |
| Completed doctorate | 0.6% | 1.1% | 1.3% |
There are a total of 7 public schools, 1 private schools and n/a post-secondary schools in Marlin. Using the proficiency score averages, the average test scores for Marlin, TX schools is 19%. The average student to teacher ratio is 12:1. In Marlin, TX, an average of 64.9% of students have completed 8th grade and an average of 62.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Robinson, TX | 11,806 | 55% | 14.3% |
| Bremond, TX | 981 | 53% | 10.4% |
| Riesel, TX | 1,349 | 42% | 12.5% |
| Chilton, TX | 671 | 40% | 17.7% |
| Lott, TX | 714 | 35% | 26.4% |
| Marlin, TX | 5,602 | 19% | 61.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Brookshire, TX | 5,601 | 40% | 16.9% |
| Wayne, NE | 5,603 | 59% | 22.6% |
| Prairie du Chien, WI | 5,605 | 48% | 0.8% |
| Edinboro, PA | 5,599 | 67% | 38.5% |
| Waimanalo, HI | 5,599 | 38% | 21.2% |
| Marlin, TX | 5,602 | 19% | 61.1% |
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