| 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 |


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| 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 | 21,532 | 77% | 60.4% |
| Mukilteo, WA | 21,937 | 69% | 43.6% |
| Lake Stevens, WA | 34,189 | 64% | 32.6% |
| Coupeville, WA | 1,911 | 63% | 30.2% |
| Edmonds, WA | 44,023 | 62% | 28.7% |
| Langley, WA | 1,236 | 56% | 17.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Valmeyer, IL | 1,236 | 32% | 33.0% |
| Princeton, WI | 1,236 | 45% | 7.3% |
| Timpson, TX | 1,236 | 43% | 10.4% |
| Theresa, WI | 1,235 | 70% | 44.8% |
| Preston, MN | 1,237 | 63% | 31.3% |
| Langley, WA | 1,236 | 56% | 17.2% |