| Index | Carter | Montana | National |
| Average Test Scores | n/a | 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 | Carter | Montana | National |
| Completed 8th grade | 93.8% | 89.4% | 84.3% |
| Completed high school | 93.8% | 88.2% | 83.0% |
| Completed some college | 32.3% | 63.1% | 59.4% |
| Completed associate degree | 18.5% | 38.6% | 38.5% |
| Completed bachelors | 9.2% | 29.9% | 30.3% |
| Completed masters | 6.2% | 9.8% | 11.5% |
| Completed professional degree | 4.6% | 3.0% | 3.3% |
| Completed doctorate | 4.6% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Carter. Using the proficiency score averages, the average test scores for Carter, MT schools is n/a. The average student to teacher ratio is n/a. In Carter, MT, an average of 93.8% of students have completed 8th grade and an average of 93.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Highwood, MT | 229 | 65% | 35.4% |
| Fort Benton, MT | 1,410 | 63% | 31.6% |
| Carter, MT | 99 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Bradley, CA | 99 | 30% | 37.5% |
| Downieville, CA | 99 | 50% | 4.2% |
| Melstone, MT | 100 | 47% | 2.8% |
| Bickleton, WA | 100 | 65% | 34.4% |
| Rosalia, KS | 100 | 32% | 32.6% |
| Carter, MT | 99 | n/a |
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