| Index | Cardwell | Montana | National |
| Average Test Scores | 50% | 45% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 408 | 79,221 |
| Total private schools | n/a | 77 | 24,874 |
| Total post-secondary schools | n/a | 32 | 7,963 |
| Index | Cardwell | Montana | National |
| Completed 8th grade | 98.1% | 89.4% | 84.3% |
| Completed high school | 69.2% | 88.2% | 83.0% |
| Completed some college | 21.2% | 63.1% | 59.4% |
| Completed associate degree | 11.5% | 38.6% | 38.5% |
| Completed bachelors | 11.5% | 29.9% | 30.3% |
| Completed masters | 0.0% | 9.8% | 11.5% |
| Completed professional degree | 0.0% | 3.0% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Cardwell. Using the proficiency score averages, the average test scores for Cardwell, MT schools is 50%. The average student to teacher ratio is n/a. In Cardwell, MT, an average of 98.1% of students have completed 8th grade and an average of 69.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Harrison, MT | 64 | 53% | 11.1% |
| Whitehall, MT | 1,000 | 49% | 1.7% |
| Cardwell, MT | 107 | 50% | 4.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Herminie, PA | 108 | 65% | 34.4% |
| Roosevelt, WA | 108 | 50% | 4.2% |
| Arlington, AZ | 108 | 35% | 28.1% |
| Beryl Junction, UT | 106 | 40% | 17.7% |
| Leadore, ID | 106 | 55% | 14.6% |
| Cardwell, MT | 107 | 50% | 4.2% |
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