| Index | Mattawa | Washington | National |
| Average Test Scores | 23% | 54% | 48% |
| Student/Teacher ratio | 21:1 | 20:1 | 16:1 |
| Total public schools | 5 | 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 | Mattawa | Washington | National |
| Completed 8th grade | 41.2% | 87.5% | 84.3% |
| Completed high school | 30.6% | 86.6% | 83.0% |
| Completed some college | 12.5% | 67.7% | 59.4% |
| Completed associate degree | 6.1% | 43.3% | 38.5% |
| Completed bachelors | 5.1% | 33.6% | 30.3% |
| Completed masters | 1.0% | 12.3% | 11.5% |
| Completed professional degree | 0.0% | 3.6% | 3.3% |
| Completed doctorate | 0.0% | 1.5% | 1.3% |
There are a total of 5 public schools, n/a private schools and n/a post-secondary schools in Mattawa. Using the proficiency score averages, the average test scores for Mattawa, WA schools is 23%. The average student to teacher ratio is 21:1. In Mattawa, WA, an average of 41.2% of students have completed 8th grade and an average of 30.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Royal City, WA | 2,384 | 39% | 19.0% |
| Mattawa, WA | 5,040 | 23% | 52.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Gretna, NE | 5,039 | 70% | 45.6% |
| Rainsville, AL | 5,038 | 45% | 7.3% |
| Maize, KS | 5,044 | 49% | 1.9% |
| Sea Cliff, NY | 5,045 | 92% | 91.7% |
| Alva, OK | 5,046 | 38% | 21.4% |
| Mattawa, WA | 5,040 | 23% | 52.7% |
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