| Index | Grass Valley | 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 | Grass Valley | Oregon | National |
| Completed 8th grade | 92.8% | 86.3% | 84.3% |
| Completed high school | 91.9% | 85.4% | 83.0% |
| Completed some college | 52.3% | 66.1% | 59.4% |
| Completed associate degree | 21.6% | 39.9% | 38.5% |
| Completed bachelors | 18.0% | 31.4% | 30.3% |
| Completed masters | 5.4% | 11.9% | 11.5% |
| Completed professional degree | 3.6% | 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 Grass Valley. Using the proficiency score averages, the average test scores for Grass Valley, OR schools is n/a. The average student to teacher ratio is n/a. In Grass Valley, OR, an average of 92.8% of students have completed 8th grade and an average of 91.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Moro, OR | 326 | 57% | 18.8% |
| Maupin, OR | 387 | 42% | 12.0% |
| Grass Valley, OR | 243 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| McNeal, AZ | 243 | 40% | 16.7% |
| Hornbrook, CA | 243 | 30% | 37.5% |
| Prairie Home, MO | 243 | 40% | 16.7% |
| Koyuk, AK | 243 | 10% | 79.2% |
| Brookville, KS | 242 | 20% | 59.4% |
| Grass Valley, OR | 243 | n/a |
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