| Index | Rainier | Washington | National |
| Average Test Scores | 55% | 54% | 48% |
| Student/Teacher ratio | 20:1 | 20:1 | 16:1 |
| Total public schools | 3 | 1,991 | 79,221 |
| Total private schools | n/a | 548 | 24,874 |
| Total post-secondary schools | n/a | 147 | 7,963 |
| Index | Rainier | Washington | National |
| Completed 8th grade | 85.7% | 87.5% | 84.3% |
| Completed high school | 85.4% | 86.6% | 83.0% |
| Completed some college | 58.0% | 67.7% | 59.4% |
| Completed associate degree | 34.3% | 43.3% | 38.5% |
| Completed bachelors | 20.5% | 33.6% | 30.3% |
| Completed masters | 4.7% | 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 3 public schools, n/a private schools and n/a post-secondary schools in Rainier. Using the proficiency score averages, the average test scores for Rainier, WA schools is 55%. The average student to teacher ratio is 20:1. In Rainier, WA, an average of 85.7% of students have completed 8th grade and an average of 85.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Olympia, WA | 52,290 | 64% | 33.0% |
| McKenna, WA | 623 | 61% | 27.1% |
| DuPont, WA | 9,514 | 61% | 26.0% |
| Tumwater, WA | 23,390 | 60% | 24.7% |
| Lacey, WA | 50,827 | 57% | 19.4% |
| Rainier, WA | 2,603 | 55% | 13.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Bennett, CO | 2,603 | 32% | 32.6% |
| Salina, UT | 2,603 | 44% | 9.4% |
| Trenton, IL | 2,604 | 44% | 8.7% |
| Alburtis, PA | 2,604 | 62% | 29.2% |
| White Salmon, WA | 2,601 | 52% | 7.8% |
| Rainier, WA | 2,603 | 55% | 13.9% |
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