| Index | Callao | Missouri | National |
| Average Test Scores | 40% | 44% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 1,899 | 79,221 |
| Total private schools | n/a | 531 | 24,874 |
| Total post-secondary schools | n/a | 213 | 7,963 |
| Index | Callao | Missouri | National |
| Completed 8th grade | 79.4% | 86.0% | 84.3% |
| Completed high school | 76.6% | 84.2% | 83.0% |
| Completed some college | 25.7% | 57.7% | 59.4% |
| Completed associate degree | 11.2% | 35.2% | 38.5% |
| Completed bachelors | 3.7% | 27.6% | 30.3% |
| Completed masters | 0.0% | 10.4% | 11.5% |
| Completed professional degree | 0.0% | 2.8% | 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 Callao. Using the proficiency score averages, the average test scores for Callao, MO schools is 40%. The average student to teacher ratio is n/a. In Callao, MO, an average of 79.4% of students have completed 8th grade and an average of 76.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Atlanta, MO | 572 | 71% | 47.9% |
| Macon, MO | 5,357 | 54% | 11.5% |
| Bucklin, MO | 359 | 49% | 1.6% |
| Bevier, MO | 671 | 45% | 6.8% |
| New Cambria, MO | 114 | 44% | 8.9% |
| Callao, MO | 319 | 40% | 16.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Taylorsville, GA | 319 | 54% | 11.5% |
| West Union, SC | 319 | 61% | 26.0% |
| Polk, NE | 319 | 50% | 4.2% |
| Milford, NY | 319 | 50% | 3.1% |
| Brooker, FL | 319 | 50% | 4.2% |
| Callao, MO | 319 | 40% | 16.7% |
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