| Index | Greenfield | Oklahoma | National |
| Average Test Scores | n/a | 32% | 48% |
| Student/Teacher ratio | n/a | 22:1 | 16:1 |
| Total public schools | n/a | 1,346 | 79,221 |
| Total private schools | n/a | 159 | 24,874 |
| Total post-secondary schools | n/a | 178 | 7,963 |
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| Index | Greenfield | Oklahoma | National |
| Completed 8th grade | 70.0% | 83.5% | 84.3% |
| Completed high school | 70.0% | 82.2% | 83.0% |
| Completed some college | 38.3% | 55.6% | 59.4% |
| Completed associate degree | 11.7% | 31.9% | 38.5% |
| Completed bachelors | 11.7% | 24.5% | 30.3% |
| Completed masters | 3.3% | 8.1% | 11.5% |
| Completed professional degree | 0.0% | 2.3% | 3.3% |
| Completed doctorate | 0.0% | 1.0% | 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, OK schools is n/a. The average student to teacher ratio is n/a. In Greenfield, OK, an average of 70.0% of students have completed 8th grade and an average of 70.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Calumet, OK | 531 | 49% | 1.7% |
| Hydro, OK | 1,175 | 44% | 8.7% |
| Watonga, OK | 2,867 | 36% | 26.0% |
| Geary, OK | 895 | 23% | 51.7% |
| Greenfield, OK | 176 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Point Lay, AK | 176 | 10% | 79.2% |
| Washtucna, WA | 176 | 40% | 16.7% |
| Rockland, ID | 176 | 67% | 39.6% |
| San Geronimo, CA | 176 | 51% | 6.3% |
| Glacier View, AK | 176 | 50% | 4.2% |
| Greenfield, OK | 176 | n/a |
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