| Index | Cottage Lake | Washington | National |
| Average Test Scores | 81% | 48% | 49% |
| 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 | Cottage Lake | Washington | National |
| Completed 8th grade | 96.2% | 87.5% | 84.3% |
| Completed high school | 96.2% | 86.6% | 83.0% |
| Completed some college | 86.7% | 67.7% | 59.4% |
| Completed associate degree | 69.4% | 43.3% | 38.5% |
| Completed bachelors | 60.8% | 33.6% | 30.3% |
| Completed masters | 24.0% | 12.3% | 11.5% |
| Completed professional degree | 5.9% | 3.6% | 3.3% |
| Completed doctorate | 2.6% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Cottage Lake. Using the proficiency score averages, the average test scores for Cottage Lake, WA schools is 81%. The average student to teacher ratio is n/a. In Cottage Lake, WA, an average of 96.2% of students have completed 8th grade and an average of 96.2% have completed high school.
| City, State | Population | Avg. Test Scores | National Avg. |
| Medina, WA | 3,169 | 88% | 79% |
| Union Hill-Novelty Hill, WA | 22,015 | 88% | 79% |
| Mercer Island, WA | 24,467 | 83% | 69% |
| Sammamish, WA | 62,136 | 81% | 65% |
| Lake Forest Park, WA | 13,156 | 80% | 63% |
| Cottage Lake, WA | 23,845 | 81% | 65% |
| City, State | Population | Avg. Test Scores | National Avg. |
| Derby, KS | 23,847 | 44% | 10% |
| Keystone, FL | 23,850 | 77% | 57% |
| Loma Linda, CA | 23,859 | 51% | 4% |
| Medford, NY | 23,829 | 44% | 11% |
| Fountain Hills, AZ | 23,863 | 45% | 8% |
| Cottage Lake, WA | 23,845 | 81% | 65% |
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