| Index | South Glastonbury | Montana | National |
| Average Test Scores | n/a | 45% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 408 | 79,221 |
| Total private schools | n/a | 77 | 24,874 |
| Total post-secondary schools | n/a | 32 | 7,963 |
| Index | South Glastonbury | Montana | National |
| Completed 8th grade | 100.0% | 89.4% | 84.3% |
| Completed high school | 100.0% | 88.2% | 83.0% |
| Completed some college | 84.4% | 63.1% | 59.4% |
| Completed associate degree | 51.3% | 38.6% | 38.5% |
| Completed bachelors | 44.2% | 29.9% | 30.3% |
| Completed masters | 10.3% | 9.8% | 11.5% |
| Completed professional degree | 2.2% | 3.0% | 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 South Glastonbury. Using the proficiency score averages, the average test scores for South Glastonbury, MT schools is n/a. The average student to teacher ratio is n/a. In South Glastonbury, MT, an average of 100.0% of students have completed 8th grade and an average of 100.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Pray, MT | 719 | 45% | 6.3% |
| South Glastonbury, MT | 379 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Phenix, VA | 379 | 85% | 76.0% |
| Drake, ND | 379 | 25% | 47.9% |
| Odell, NE | 379 | 75% | 56.3% |
| Dublin, NC | 380 | 22% | 54.2% |
| Iroquois, SD | 378 | 40% | 16.7% |
| South Glastonbury, MT | 379 | n/a |
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