| Index | Mukilteo | Washington | National |
| Average Test Scores | 69% | 54% | 48% |
| Student/Teacher ratio | 21:1 | 20:1 | 16:1 |
| Total public schools | 6 | 1,991 | 79,221 |
| Total private schools | 1 | 548 | 24,874 |
| Total post-secondary schools | n/a | 147 | 7,963 |
| Index | Mukilteo | Washington | National |
| Completed 8th grade | 95.2% | 87.5% | 84.3% |
| Completed high school | 94.4% | 86.6% | 83.0% |
| Completed some college | 79.7% | 67.7% | 59.4% |
| Completed associate degree | 60.4% | 43.3% | 38.5% |
| Completed bachelors | 50.2% | 33.6% | 30.3% |
| Completed masters | 18.9% | 12.3% | 11.5% |
| Completed professional degree | 4.5% | 3.6% | 3.3% |
| Completed doctorate | 2.0% | 1.5% | 1.3% |
There are a total of 6 public schools, 1 private schools and n/a post-secondary schools in Mukilteo. Using the proficiency score averages, the average test scores for Mukilteo, WA schools is 69%. The average student to teacher ratio is 21:1. In Mukilteo, WA, an average of 95.2% of students have completed 8th grade and an average of 94.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Woodinville, WA | 13,038 | 78% | 62.8% |
| Mill Creek, WA | 20,750 | 77% | 60.4% |
| Kirkland, WA | 91,146 | 76% | 58.2% |
| Lake Forest Park, WA | 13,455 | 76% | 57.3% |
| Shoreline, WA | 56,835 | 71% | 47.8% |
| Mukilteo, WA | 21,414 | 69% | 43.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Portsmouth, NH | 21,418 | 75% | 55.8% |
| North Bellmore, NY | 21,422 | 57% | 18.8% |
| Duarte, CA | 21,399 | 40% | 16.1% |
| Bear, DE | 21,397 | 48% | 0.7% |
| Mountain House, CA | 21,387 | 69% | 42.9% |
| Mukilteo, WA | 21,414 | 69% | 43.6% |
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