| Index | Dexter | New Mexico | National |
| Average Test Scores | 20% | 27% | 48% |
| Student/Teacher ratio | 16:1 | 15:1 | 16:1 |
| Total public schools | 3 | 667 | 79,221 |
| Total private schools | n/a | 163 | 24,874 |
| Total post-secondary schools | n/a | 55 | 7,963 |
| Index | Dexter | New Mexico | National |
| Completed 8th grade | 64.8% | 81.4% | 84.3% |
| Completed high school | 63.7% | 80.0% | 83.0% |
| Completed some college | 38.3% | 58.2% | 59.4% |
| Completed associate degree | 16.9% | 34.7% | 38.5% |
| Completed bachelors | 10.3% | 26.7% | 30.3% |
| Completed masters | 6.2% | 11.6% | 11.5% |
| Completed professional degree | 0.4% | 3.4% | 3.3% |
| Completed doctorate | 0.0% | 1.8% | 1.3% |
There are a total of 3 public schools, n/a private schools and n/a post-secondary schools in Dexter. Using the proficiency score averages, the average test scores for Dexter, NM schools is 20%. The average student to teacher ratio is 16:1. In Dexter, NM, an average of 64.8% of students have completed 8th grade and an average of 63.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Roswell, NM | 47,751 | 29% | 40.4% |
| Dexter, NM | 1,061 | 20% | 58.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Boise City, OK | 1,061 | 19% | 60.4% |
| Sabinal, TX | 1,061 | 34% | 29.5% |
| South Pekin, IL | 1,061 | 20% | 59.4% |
| Marion Center, MA | 1,061 | 61% | 27.1% |
| Bethlehem, NH | 1,061 | 67% | 39.9% |
| Dexter, NM | 1,061 | 20% | 58.3% |
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