| Index | Carter | Oklahoma | National |
| Average Test Scores | n/a | 32% | 48% |
| Student/Teacher ratio | n/a | 22:1 | 16:1 |
| Total public schools | n/a | 1,346 | 79,221 |
| Total private schools | n/a | 159 | 24,874 |
| Total post-secondary schools | n/a | 178 | 7,963 |
| Index | Carter | Oklahoma | National |
| Completed 8th grade | 73.3% | 83.5% | 84.3% |
| Completed high school | 73.3% | 82.2% | 83.0% |
| Completed some college | 34.7% | 55.6% | 59.4% |
| Completed associate degree | 23.8% | 31.9% | 38.5% |
| Completed bachelors | 7.9% | 24.5% | 30.3% |
| Completed masters | 2.5% | 8.1% | 11.5% |
| Completed professional degree | 0.0% | 2.3% | 3.3% |
| Completed doctorate | 0.0% | 1.0% | 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, OK schools is n/a. The average student to teacher ratio is n/a. In Carter, OK, an average of 73.3% of students have completed 8th grade and an average of 73.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Canute, OK | 507 | 40% | 17.2% |
| Elk City, OK | 11,544 | 32% | 33.9% |
| Sayre, OK | 4,480 | 28% | 41.7% |
| Carter, OK | 195 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Deer Creek, MN | 195 | 50% | 4.2% |
| Plaza, ND | 195 | 58% | 19.8% |
| Emerson, AR | 195 | 57% | 18.8% |
| Caledonia, IL | 195 | 27% | 43.8% |
| Big Bend, CA | 195 | 50% | 4.2% |
| Carter, OK | 195 | n/a |
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