| Index | Fort Defiance | Arizona | National |
| Average Test Scores | 25% | 43% | 48% |
| Student/Teacher ratio | n/a | 18:1 | 16:1 |
| Total public schools | 1 | 1,863 | 79,221 |
| Total private schools | n/a | 316 | 24,874 |
| Total post-secondary schools | n/a | 148 | 7,963 |
| Index | Fort Defiance | Arizona | National |
| Completed 8th grade | 88.6% | 83.7% | 84.3% |
| Completed high school | 87.6% | 82.2% | 83.0% |
| Completed some college | 38.9% | 62.0% | 59.4% |
| Completed associate degree | 14.2% | 36.5% | 38.5% |
| Completed bachelors | 7.8% | 28.0% | 30.3% |
| Completed masters | 1.8% | 10.4% | 11.5% |
| Completed professional degree | 0.4% | 2.9% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of 1 public schools, n/a private schools and n/a post-secondary schools in Fort Defiance. Using the proficiency score averages, the average test scores for Fort Defiance, AZ schools is 25%. The average student to teacher ratio is n/a. In Fort Defiance, AZ, an average of 88.6% of students have completed 8th grade and an average of 87.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Window Rock, AZ | 2,451 | 27% | 43.8% |
| Navajo, NM | 1,818 | 11% | 76.3% |
| St. Michaels, AZ | 916 | 9% | 82.3% |
| Fort Defiance, AZ | 4,209 | 25% | 49.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Rigby, ID | 4,209 | 46% | 4.2% |
| Deer Park, WA | 4,209 | 57% | 19.0% |
| Arabi, LA | 4,207 | 72% | 49.0% |
| Lonoke, AR | 4,206 | 36% | 25.7% |
| Hampton, IA | 4,212 | 65% | 34.7% |
| Fort Defiance, AZ | 4,209 | 25% | 49.0% |
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