| Index | Langley | Washington | National |
| Average Test Scores | 56% | 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 | Langley | Washington | National |
| Completed 8th grade | 95.0% | 87.5% | 84.3% |
| Completed high school | 95.0% | 86.6% | 83.0% |
| Completed some college | 78.1% | 67.7% | 59.4% |
| Completed associate degree | 52.9% | 43.3% | 38.5% |
| Completed bachelors | 45.8% | 33.6% | 30.3% |
| Completed masters | 17.9% | 12.3% | 11.5% |
| Completed professional degree | 5.4% | 3.6% | 3.3% |
| Completed doctorate | 3.0% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Langley. Using the proficiency score averages, the average test scores for Langley, WA schools is 56%. The average student to teacher ratio is n/a. In Langley, WA, an average of 95.0% of students have completed 8th grade and an average of 95.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Mill Creek, WA | 20,750 | 77% | 60.4% |
| Mukilteo, WA | 21,414 | 69% | 43.6% |
| Lake Stevens, WA | 33,470 | 64% | 32.6% |
| Coupeville, WA | 1,850 | 63% | 30.2% |
| Edmonds, WA | 42,347 | 62% | 28.7% |
| Langley, WA | 1,201 | 56% | 17.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Bradford, TN | 1,201 | 42% | 12.5% |
| Waukomis, OK | 1,201 | 32% | 32.8% |
| Pembroke, VA | 1,201 | 82% | 70.8% |
| Tolar, TX | 1,201 | 65% | 34.4% |
| Mount Gilead, NC | 1,202 | 34% | 28.5% |
| Langley, WA | 1,201 | 56% | 17.2% |
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