| Index | South Duxbury | Massachusetts | National |
| Average Test Scores | n/a | 52% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 1,167 | 79,221 |
| Total private schools | n/a | 508 | 24,874 |
| Total post-secondary schools | n/a | 193 | 7,963 |
| Index | South Duxbury | Massachusetts | National |
| Completed 8th grade | 96.2% | 88.3% | 84.3% |
| Completed high school | 96.2% | 87.2% | 83.0% |
| Completed some college | 89.2% | 65.0% | 59.4% |
| Completed associate degree | 78.8% | 49.0% | 38.5% |
| Completed bachelors | 74.5% | 41.2% | 30.3% |
| Completed masters | 32.4% | 18.2% | 11.5% |
| Completed professional degree | 12.5% | 5.4% | 3.3% |
| Completed doctorate | 2.3% | 2.6% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in South Duxbury. Using the proficiency score averages, the average test scores for South Duxbury, MA schools is n/a. The average student to teacher ratio is n/a. In South Duxbury, MA, an average of 96.2% of students have completed 8th grade and an average of 96.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Hingham, MA | 5,987 | 79% | 65.5% |
| Duxbury, MA | 1,774 | 75% | 55.6% |
| Scituate, MA | 6,062 | 74% | 54.9% |
| Marshfield, MA | 5,296 | 74% | 54.3% |
| North Pembroke, MA | 4,293 | 71% | 46.9% |
| South Duxbury, MA | 3,467 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Hoopa, CA | 3,467 | 33% | 31.0% |
| Kenedy, TX | 3,467 | 39% | 19.4% |
| Frontenac, KS | 3,466 | 35% | 26.4% |
| Peshtigo, WI | 3,466 | 31% | 35.4% |
| Littleton Common, MA | 3,465 | 66% | 36.5% |
| South Duxbury, MA | 3,467 | n/a |
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