| Index | Gardiner | Oregon | National |
| Average Test Scores | n/a | 46% | 48% |
| Student/Teacher ratio | n/a | 20:1 | 16:1 |
| Total public schools | n/a | 1,097 | 79,221 |
| Total private schools | n/a | 361 | 24,874 |
| Total post-secondary schools | n/a | 89 | 7,963 |
| Index | Gardiner | Oregon | National |
| Completed 8th grade | 85.6% | 86.3% | 84.3% |
| Completed high school | 85.6% | 85.4% | 83.0% |
| Completed some college | 81.3% | 66.1% | 59.4% |
| Completed associate degree | 18.0% | 39.9% | 38.5% |
| Completed bachelors | 2.9% | 31.4% | 30.3% |
| Completed masters | 0.0% | 11.9% | 11.5% |
| Completed professional degree | 0.0% | 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 Gardiner. Using the proficiency score averages, the average test scores for Gardiner, OR schools is n/a. The average student to teacher ratio is n/a. In Gardiner, OR, an average of 85.6% of students have completed 8th grade and an average of 85.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Reedsport, OR | 4,085 | 37% | 22.9% |
| Gardiner, OR | 466 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Parker, ID | 466 | 60% | 25.0% |
| Bayfield, WI | 466 | 24% | 51.0% |
| Tishomingo, MS | 466 | 41% | 14.6% |
| New Alexandria, PA | 466 | 65% | 34.4% |
| Center, MO | 467 | 46% | 5.2% |
| Gardiner, OR | 466 | n/a |
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