| Index | Grass Valley | California | National |
| Average Test Scores | 47% | 43% | 48% |
| Student/Teacher ratio | 18:1 | 20:1 | 16:1 |
| Total public schools | 28 | 8,308 | 79,221 |
| Total private schools | 4 | 3,438 | 24,874 |
| Total post-secondary schools | n/a | 1,085 | 7,963 |
| Index | Grass Valley | California | National |
| Completed 8th grade | 87.0% | 81.1% | 84.3% |
| Completed high school | 86.5% | 79.8% | 83.0% |
| Completed some college | 66.1% | 61.5% | 59.4% |
| Completed associate degree | 35.0% | 39.8% | 38.5% |
| Completed bachelors | 24.6% | 32.0% | 30.3% |
| Completed masters | 10.3% | 11.9% | 11.5% |
| Completed professional degree | 3.4% | 3.9% | 3.3% |
| Completed doctorate | 0.4% | 1.6% | 1.3% |
There are a total of 28 public schools, 4 private schools and n/a post-secondary schools in Grass Valley. Using the proficiency score averages, the average test scores for Grass Valley, CA schools is 47%. The average student to teacher ratio is 18:1. In Grass Valley, CA, an average of 87.0% of students have completed 8th grade and an average of 86.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Washington, CA | 137 | 50% | 4.2% |
| Alta, CA | 703 | 50% | 4.2% |
| Penn Valley, CA | 1,073 | 44% | 8.7% |
| Colfax, CA | 2,258 | 43% | 11.1% |
| Nevada City, CA | 3,145 | 42% | 13.5% |
| Grass Valley, CA | 12,817 | 47% | 2.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Herrin, IL | 12,806 | 36% | 24.7% |
| Cedar Lake, IN | 12,830 | 60% | 25.0% |
| Joppatowne, MD | 12,833 | 28% | 42.5% |
| Jacksonville, AL | 12,796 | 59% | 23.4% |
| Lindsay, CA | 12,793 | 40% | 17.7% |
| Grass Valley, CA | 12,817 | 47% | 2.7% |
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