| Index | Medfield | Massachusetts | National |
| Average Test Scores | 76% | 52% | 48% |
| Student/Teacher ratio | 13:1 | 14:1 | 16:1 |
| Total public schools | 5 | 1,167 | 79,221 |
| Total private schools | n/a | 508 | 24,874 |
| Total post-secondary schools | n/a | 193 | 7,963 |
| Index | Medfield | Massachusetts | National |
| Completed 8th grade | 95.6% | 88.3% | 84.3% |
| Completed high school | 95.6% | 87.2% | 83.0% |
| Completed some college | 86.6% | 65.0% | 59.4% |
| Completed associate degree | 75.1% | 49.0% | 38.5% |
| Completed bachelors | 69.3% | 41.2% | 30.3% |
| Completed masters | 33.6% | 18.2% | 11.5% |
| Completed professional degree | 7.9% | 5.4% | 3.3% |
| Completed doctorate | 1.7% | 2.6% | 1.3% |
There are a total of 5 public schools, n/a private schools and n/a post-secondary schools in Medfield. Using the proficiency score averages, the average test scores for Medfield, MA schools is 76%. The average student to teacher ratio is 13:1. In Medfield, MA, an average of 95.6% of students have completed 8th grade and an average of 95.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Dover, MA | 2,612 | 85% | 77.4% |
| Belmont, MA | 26,925 | 84% | 74.0% |
| Hopkinton, MA | 3,986 | 82% | 69.8% |
| Wellesley, MA | 29,744 | 80% | 66.0% |
| Cochituate, MA | 6,978 | 78% | 61.5% |
| Medfield, MA | 6,867 | 76% | 59.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Conley, GA | 6,867 | 24% | 50.0% |
| North Caldwell, NJ | 6,867 | 79% | 63.5% |
| Gunnison, CO | 6,866 | 37% | 22.6% |
| Scottsburg, IN | 6,866 | 50% | 3.1% |
| Ellettsville, IN | 6,865 | 57% | 18.1% |
| Medfield, MA | 6,867 | 76% | 59.1% |
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