| Index | Isabel | South Dakota | National |
| Average Test Scores | n/a | 48% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 340 | 79,221 |
| Total private schools | n/a | 76 | 24,874 |
| Total post-secondary schools | n/a | 25 | 7,963 |
| Index | Isabel | South Dakota | National |
| Completed 8th grade | 88.9% | 89.1% | 84.3% |
| Completed high school | 86.9% | 86.8% | 83.0% |
| Completed some college | 41.4% | 60.4% | 59.4% |
| Completed associate degree | 19.2% | 38.5% | 38.5% |
| Completed bachelors | 12.1% | 27.5% | 30.3% |
| Completed masters | 5.1% | 8.1% | 11.5% |
| Completed professional degree | 0.0% | 2.5% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Isabel. Using the proficiency score averages, the average test scores for Isabel, SD schools is n/a. The average student to teacher ratio is n/a. In Isabel, SD, an average of 88.9% of students have completed 8th grade and an average of 86.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Isabel, SD | 196 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Yolo, CA | 196 | 5% | 89.6% |
| Stevinson, CA | 196 | 20% | 58.3% |
| Caledonia, IL | 195 | 27% | 43.8% |
| Fordville, ND | 197 | 30% | 37.5% |
| Emerson, AR | 195 | 57% | 18.8% |
| Isabel, SD | 196 | n/a |
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