| Index | Riddle | Oregon | National |
| Average Test Scores | 31% | 46% | 48% |
| Student/Teacher ratio | 18:1 | 20:1 | 16:1 |
| Total public schools | 2 | 1,097 | 79,221 |
| Total private schools | n/a | 361 | 24,874 |
| Total post-secondary schools | n/a | 89 | 7,963 |
| Index | Riddle | Oregon | National |
| Completed 8th grade | 78.6% | 86.3% | 84.3% |
| Completed high school | 77.2% | 85.4% | 83.0% |
| Completed some college | 45.4% | 66.1% | 59.4% |
| Completed associate degree | 10.0% | 39.9% | 38.5% |
| Completed bachelors | 4.4% | 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 2 public schools, n/a private schools and n/a post-secondary schools in Riddle. Using the proficiency score averages, the average test scores for Riddle, OR schools is 31%. The average student to teacher ratio is 18:1. In Riddle, OR, an average of 78.6% of students have completed 8th grade and an average of 77.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Dillard, OR | 525 | 50% | 4.2% |
| Myrtle Creek, OR | 3,447 | 37% | 22.1% |
| Canyonville, OR | 1,812 | 37% | 22.9% |
| Glendale, OR | 821 | 32% | 32.8% |
| Winston, OR | 5,444 | 29% | 40.4% |
| Riddle, OR | 1,159 | 31% | 35.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Winchester, OH | 1,159 | 58% | 20.8% |
| Arlington, GA | 1,159 | 15% | 69.8% |
| Cross Plains, TX | 1,159 | 48% | 0.5% |
| Lambert, MS | 1,159 | 52% | 8.3% |
| Centreville, MI | 1,159 | 44% | 8.7% |
| Riddle, OR | 1,159 | 31% | 35.9% |
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