| Index | Stewartville | Minnesota | National |
| Average Test Scores | 61% | 52% | 48% |
| Student/Teacher ratio | 18:1 | 16:1 | 16:1 |
| Total public schools | 4 | 2,224 | 79,221 |
| Total private schools | n/a | 477 | 24,874 |
| Total post-secondary schools | n/a | 140 | 7,963 |
| Index | Stewartville | Minnesota | National |
| Completed 8th grade | 92.8% | 90.5% | 84.3% |
| Completed high school | 91.4% | 89.5% | 83.0% |
| Completed some college | 69.4% | 66.9% | 59.4% |
| Completed associate degree | 42.3% | 45.2% | 38.5% |
| Completed bachelors | 27.3% | 34.2% | 30.3% |
| Completed masters | 7.6% | 11.5% | 11.5% |
| Completed professional degree | 0.8% | 3.5% | 3.3% |
| Completed doctorate | 0.0% | 1.4% | 1.3% |
There are a total of 4 public schools, n/a private schools and n/a post-secondary schools in Stewartville. Using the proficiency score averages, the average test scores for Stewartville, MN schools is 61%. The average student to teacher ratio is 18:1. In Stewartville, MN, an average of 92.8% of students have completed 8th grade and an average of 91.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Kasson, MN | 6,425 | 62% | 29.5% |
| Eyota, MN | 2,183 | 62% | 28.1% |
| Byron, MN | 5,536 | 53% | 11.0% |
| Spring Valley, MN | 2,395 | 53% | 10.9% |
| Grand Meadow, MN | 1,095 | 53% | 10.4% |
| Stewartville, MN | 6,123 | 61% | 26.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Piedmont, SC | 6,122 | 53% | 11.1% |
| Sheridan, OR | 6,122 | 34% | 28.6% |
| Los Ranchos de Albuquerque, NM | 6,120 | 27% | 43.8% |
| Foxborough, MA | 6,119 | 63% | 30.6% |
| Pauls Valley, OK | 6,128 | 40% | 16.9% |
| Stewartville, MN | 6,123 | 61% | 26.7% |
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