| Index | Grantsburg | Wisconsin | National |
| Average Test Scores | 35% | 41% | 48% |
| Student/Teacher ratio | 17:1 | 14:1 | 16:1 |
| Total public schools | 5 | 1,869 | 79,221 |
| Total private schools | n/a | 872 | 24,874 |
| Total post-secondary schools | n/a | 114 | 7,963 |
| Index | Grantsburg | Wisconsin | National |
| Completed 8th grade | 84.5% | 89.0% | 84.3% |
| Completed high school | 81.8% | 87.8% | 83.0% |
| Completed some college | 50.1% | 59.7% | 59.4% |
| Completed associate degree | 29.6% | 38.7% | 38.5% |
| Completed bachelors | 15.1% | 28.4% | 30.3% |
| Completed masters | 6.4% | 9.6% | 11.5% |
| Completed professional degree | 0.6% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of 5 public schools, n/a private schools and n/a post-secondary schools in Grantsburg. Using the proficiency score averages, the average test scores for Grantsburg, WI schools is 35%. The average student to teacher ratio is 17:1. In Grantsburg, WI, an average of 84.5% of students have completed 8th grade and an average of 81.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Rush City, MN | 3,175 | 65% | 34.9% |
| Pine City, MN | 3,113 | 48% | 1.0% |
| Frederic, WI | 1,171 | 35% | 28.1% |
| Luck, WI | 1,170 | 28% | 41.1% |
| Siren, WI | 777 | 25% | 49.0% |
| Grantsburg, WI | 1,279 | 35% | 27.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Litchfield, CT | 1,279 | 67% | 39.4% |
| Germantown, IL | 1,279 | 72% | 50.0% |
| Keaau, HI | 1,280 | 33% | 31.0% |
| Berry Creek, CA | 1,278 | 25% | 47.9% |
| Perry, KS | 1,277 | 27% | 43.2% |
| Grantsburg, WI | 1,279 | 35% | 27.3% |
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