| Index | Sudden Valley | Washington | National |
| Average Test Scores | n/a | 54% | 48% |
| Student/Teacher ratio | n/a | 20:1 | 16:1 |
| Total public schools | n/a | 1,991 | 79,221 |
| Total private schools | n/a | 548 | 24,874 |
| Total post-secondary schools | n/a | 147 | 7,963 |

| Index | Sudden Valley | Washington | National |
| Completed 8th grade | 95.2% | 87.5% | 84.3% |
| Completed high school | 95.2% | 86.6% | 83.0% |
| Completed some college | 80.0% | 67.7% | 59.4% |
| Completed associate degree | 55.7% | 43.3% | 38.5% |
| Completed bachelors | 46.7% | 33.6% | 30.3% |
| Completed masters | 14.5% | 12.3% | 11.5% |
| Completed professional degree | 4.6% | 3.6% | 3.3% |
| Completed doctorate | 3.2% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Sudden Valley. Using the proficiency score averages, the average test scores for Sudden Valley, WA schools is n/a. The average student to teacher ratio is n/a. In Sudden Valley, WA, an average of 95.2% of students have completed 8th grade and an average of 95.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Lyman, WA | 289 | 70% | 44.8% |
| Everson, WA | 2,830 | 58% | 21.5% |
| Edison, WA | 273 | 53% | 9.4% |
| Ferndale, WA | 15,070 | 52% | 7.3% |
| Acme, WA | 126 | 51% | 6.3% |
| Sudden Valley, WA | 7,670 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Strathmore, NJ | 7,673 | 62% | 28.5% |
| Cotati, CA | 7,674 | 33% | 31.3% |
| Albertville, MN | 7,674 | 74% | 54.2% |
| Robinson, IL | 7,675 | 35% | 28.1% |
| Hiawatha, IA | 7,665 | 63% | 31.8% |
| Sudden Valley, WA | 7,670 | n/a |