| Index | Marrero | Louisiana | National |
| Average Test Scores | 59% | 66% | 48% |
| Student/Teacher ratio | 16:1 | 14:1 | 16:1 |
| Total public schools | 13 | 1,334 | 79,221 |
| Total private schools | 8 | 395 | 24,874 |
| Total post-secondary schools | n/a | 175 | 7,963 |
| Index | Marrero | Louisiana | National |
| Completed 8th grade | 71.9% | 80.2% | 84.3% |
| Completed high school | 69.5% | 78.5% | 83.0% |
| Completed some college | 39.2% | 49.9% | 59.4% |
| Completed associate degree | 17.5% | 28.6% | 38.5% |
| Completed bachelors | 11.4% | 23.0% | 30.3% |
| Completed masters | 3.6% | 7.9% | 11.5% |
| Completed professional degree | 0.7% | 2.6% | 3.3% |
| Completed doctorate | 0.2% | 1.0% | 1.3% |
There are a total of 13 public schools, 8 private schools and n/a post-secondary schools in Marrero. Using the proficiency score averages, the average test scores for Marrero, LA schools is 59%. The average student to teacher ratio is 16:1. In Marrero, LA, an average of 71.9% of students have completed 8th grade and an average of 69.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Belle Chasse, LA | 10,241 | 86% | 78.1% |
| Destrehan, LA | 11,658 | 84% | 74.0% |
| Harahan, LA | 9,293 | 80% | 66.7% |
| St. Rose, LA | 6,770 | 78% | 62.5% |
| Meraux, LA | 8,187 | 77% | 60.4% |
| Marrero, LA | 31,751 | 59% | 22.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Savage, MN | 31,758 | 60% | 25.0% |
| Liberty, MO | 31,761 | 54% | 12.8% |
| Garfield, NJ | 31,722 | 50% | 4.3% |
| Southlake, TX | 31,684 | 87% | 80.7% |
| Bay Shore, NY | 31,819 | 41% | 14.1% |
| Marrero, LA | 31,751 | 59% | 22.7% |
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