| Index | Grand Marsh | Wisconsin | National |
| Average Test Scores | 40% | 41% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 1,869 | 79,221 |
| Total private schools | n/a | 872 | 24,874 |
| Total post-secondary schools | n/a | 114 | 7,963 |
| Index | Grand Marsh | Wisconsin | National |
| Completed 8th grade | 56.6% | 89.0% | 84.3% |
| Completed high school | 56.6% | 87.8% | 83.0% |
| Completed some college | 24.5% | 59.7% | 59.4% |
| Completed associate degree | 12.3% | 38.7% | 38.5% |
| Completed bachelors | 9.4% | 28.4% | 30.3% |
| Completed masters | 0.0% | 9.6% | 11.5% |
| Completed professional degree | 0.0% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Grand Marsh. Using the proficiency score averages, the average test scores for Grand Marsh, WI schools is 40%. The average student to teacher ratio is n/a. In Grand Marsh, WI, an average of 56.6% of students have completed 8th grade and an average of 56.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Coloma, WI | 554 | 60% | 25.0% |
| Endeavor, WI | 562 | 60% | 25.0% |
| Oxford, WI | 542 | 42% | 12.5% |
| Westfield, WI | 1,256 | 34% | 29.5% |
| Lyndon Station, WI | 728 | 30% | 37.5% |
| Grand Marsh, WI | 144 | 40% | 16.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Gail, TX | 144 | 65% | 34.4% |
| Westbrook, TX | 144 | 50% | 3.1% |
| Le Flore, OK | 144 | 30% | 38.0% |
| Kahlotus, WA | 144 | 40% | 16.7% |
| Atmautluak, AK | 143 | 10% | 79.2% |
| Grand Marsh, WI | 144 | 40% | 16.7% |
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