| Index | Greenfield | California | National |
| Average Test Scores | 24% | 43% | 48% |
| Student/Teacher ratio | n/a | 20:1 | 16:1 |
| Total public schools | n/a | 8,308 | 79,221 |
| Total private schools | n/a | 3,438 | 24,874 |
| Total post-secondary schools | n/a | 1,085 | 7,963 |
| Index | Greenfield | California | National |
| Completed 8th grade | 50.0% | 81.1% | 84.3% |
| Completed high school | 45.5% | 79.8% | 83.0% |
| Completed some college | 24.1% | 61.5% | 59.4% |
| Completed associate degree | 10.7% | 39.8% | 38.5% |
| Completed bachelors | 4.8% | 32.0% | 30.3% |
| Completed masters | 0.8% | 11.9% | 11.5% |
| Completed professional degree | 0.2% | 3.9% | 3.3% |
| Completed doctorate | 0.0% | 1.6% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Greenfield. Using the proficiency score averages, the average test scores for Greenfield, CA schools is 24%. The average student to teacher ratio is n/a. In Greenfield, CA, an average of 50.0% of students have completed 8th grade and an average of 45.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| King City, CA | 13,845 | 32% | 33.5% |
| Soledad, CA | 25,667 | 29% | 40.2% |
| San Lucas, CA | 415 | 25% | 47.9% |
| Gonzales, CA | 8,348 | 25% | 48.7% |
| Greenfield, CA | 17,565 | 24% | 49.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Paradise, CA | 17,560 | 52% | 8.9% |
| Sunland Park, NM | 17,581 | 39% | 19.3% |
| Wantagh, NY | 17,548 | 75% | 56.1% |
| Manassas Park, VA | 17,548 | 73% | 52.1% |
| Tinton Falls, NJ | 17,584 | 55% | 14.9% |
| Greenfield, CA | 17,565 | 24% | 49.8% |
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