| Index | Webster | South Dakota | National |
| Average Test Scores | 65% | 48% | 48% |
| Student/Teacher ratio | 14:1 | 14:1 | 16:1 |
| Total public schools | 3 | 340 | 79,221 |
| Total private schools | n/a | 76 | 24,874 |
| Total post-secondary schools | n/a | 25 | 7,963 |
| Index | Webster | South Dakota | National |
| Completed 8th grade | 88.1% | 89.1% | 84.3% |
| Completed high school | 82.1% | 86.8% | 83.0% |
| Completed some college | 50.0% | 60.4% | 59.4% |
| Completed associate degree | 28.4% | 38.5% | 38.5% |
| Completed bachelors | 17.3% | 27.5% | 30.3% |
| Completed masters | 2.8% | 8.1% | 11.5% |
| Completed professional degree | 1.5% | 2.5% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of 3 public schools, n/a private schools and n/a post-secondary schools in Webster. Using the proficiency score averages, the average test scores for Webster, SD schools is 65%. The average student to teacher ratio is 14:1. In Webster, SD, an average of 88.1% of students have completed 8th grade and an average of 82.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Waubay, SD | 530 | 36% | 24.5% |
| Webster, SD | 1,681 | 65% | 34.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Dalton, OH | 1,681 | 80% | 66.3% |
| Grant Park, IL | 1,681 | 36% | 25.0% |
| Ashland, AL | 1,680 | 43% | 11.5% |
| Pine Bush, NY | 1,682 | 56% | 16.9% |
| North Pekin, IL | 1,680 | 40% | 17.7% |
| Webster, SD | 1,681 | 65% | 34.7% |
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