| Index | Lewistown | Montana | National |
| Average Test Scores | 48% | 45% | 48% |
| Student/Teacher ratio | 14:1 | 14:1 | 16:1 |
| Total public schools | 8 | 408 | 79,221 |
| Total private schools | n/a | 77 | 24,874 |
| Total post-secondary schools | n/a | 32 | 7,963 |
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| Index | Lewistown | Montana | National |
| Completed 8th grade | 84.6% | 89.4% | 84.3% |
| Completed high school | 84.4% | 88.2% | 83.0% |
| Completed some college | 54.9% | 63.1% | 59.4% |
| Completed associate degree | 36.2% | 38.6% | 38.5% |
| Completed bachelors | 29.9% | 29.9% | 30.3% |
| Completed masters | 6.8% | 9.8% | 11.5% |
| Completed professional degree | 1.5% | 3.0% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of 8 public schools, n/a private schools and n/a post-secondary schools in Lewistown. Using the proficiency score averages, the average test scores for Lewistown, MT schools is 48%. The average student to teacher ratio is 14:1. In Lewistown, MT, an average of 84.6% of students have completed 8th grade and an average of 84.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Moore, MT | 187 | 38% | 21.9% |
| Lewistown, MT | 5,923 | 48% | 0.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Selinsgrove, PA | 5,923 | 68% | 40.6% |
| Old Tappan, NJ | 5,924 | 77% | 59.4% |
| Margate City, NJ | 5,921 | 82% | 70.8% |
| Oxford, MA | 5,926 | 41% | 14.9% |
| Countryside, IL | 5,929 | 30% | 38.5% |
| Lewistown, MT | 5,923 | 48% | 0.8% |
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