| Index | Mill Valley | California | National |
| Average Test Scores | 79% | 43% | 48% |
| Student/Teacher ratio | 19:1 | 20:1 | 16:1 |
| Total public schools | 7 | 8,308 | 79,221 |
| Total private schools | 7 | 3,438 | 24,874 |
| Total post-secondary schools | 1 | 1,085 | 7,963 |
| Index | Mill Valley | California | National |
| Completed 8th grade | 96.9% | 81.1% | 84.3% |
| Completed high school | 96.7% | 79.8% | 83.0% |
| Completed some college | 93.3% | 61.5% | 59.4% |
| Completed associate degree | 82.4% | 39.8% | 38.5% |
| Completed bachelors | 78.7% | 32.0% | 30.3% |
| Completed masters | 37.7% | 11.9% | 11.5% |
| Completed professional degree | 16.0% | 3.9% | 3.3% |
| Completed doctorate | 3.7% | 1.6% | 1.3% |
There are a total of 7 public schools, 7 private schools and 1 post-secondary schools in Mill Valley. Using the proficiency score averages, the average test scores for Mill Valley, CA schools is 79%. The average student to teacher ratio is 19:1. In Mill Valley, CA, an average of 96.9% of students have completed 8th grade and an average of 96.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Ross, CA | 2,453 | 83% | 71.9% |
| Tiburon, CA | 9,167 | 81% | 69.3% |
| Kensington, CA | 5,171 | 80% | 66.7% |
| Corte Madera, CA | 9,793 | 80% | 66.1% |
| San Anselmo, CA | 12,623 | 76% | 59.1% |
| Mill Valley, CA | 14,456 | 79% | 65.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Scottsboro, AL | 14,452 | 56% | 17.3% |
| Midlothian, IL | 14,464 | 15% | 68.2% |
| Norridge, IL | 14,465 | 40% | 16.9% |
| Owosso, MI | 14,476 | 34% | 30.2% |
| College Park, GA | 14,479 | 30% | 38.4% |
| Mill Valley, CA | 14,456 | 79% | 65.3% |
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