| Index | Garrett | Washington | National |
| Average Test Scores | n/a | 54% | 48% |
| Student/Teacher ratio | n/a | 20:1 | 16:1 |
| Total public schools | n/a | 1,991 | 79,221 |
| Total private schools | n/a | 548 | 24,874 |
| Total post-secondary schools | n/a | 147 | 7,963 |
| Index | Garrett | Washington | National |
| Completed 8th grade | 73.7% | 87.5% | 84.3% |
| Completed high school | 73.7% | 86.6% | 83.0% |
| Completed some college | 58.1% | 67.7% | 59.4% |
| Completed associate degree | 40.4% | 43.3% | 38.5% |
| Completed bachelors | 32.4% | 33.6% | 30.3% |
| Completed masters | 8.1% | 12.3% | 11.5% |
| Completed professional degree | 1.2% | 3.6% | 3.3% |
| Completed doctorate | 0.0% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Garrett. Using the proficiency score averages, the average test scores for Garrett, WA schools is n/a. The average student to teacher ratio is n/a. In Garrett, WA, an average of 73.7% of students have completed 8th grade and an average of 73.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Helix, OR | 290 | 52% | 8.3% |
| Dixie, WA | 175 | 50% | 4.2% |
| College Place, WA | 9,501 | 49% | 2.1% |
| Waitsburg, WA | 1,209 | 44% | 9.4% |
| Walla Walla, WA | 33,841 | 41% | 15.5% |
| Garrett, WA | 1,861 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Stockton, MO | 1,861 | 49% | 1.0% |
| Mount Cobb, PA | 1,861 | 75% | 55.2% |
| Great Falls, SC | 1,860 | 32% | 33.9% |
| Navajo, NM | 1,860 | 11% | 76.3% |
| Cana, VA | 1,863 | 80% | 65.6% |
| Garrett, WA | 1,861 | n/a |
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