| Index | Harris | Missouri | National |
| Average Test Scores | n/a | 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 | Harris | Missouri | National |
| Completed 8th grade | 79.5% | 86.0% | 84.3% |
| Completed high school | 71.8% | 84.2% | 83.0% |
| Completed some college | 41.0% | 57.7% | 59.4% |
| Completed associate degree | 0.0% | 35.2% | 38.5% |
| Completed bachelors | 0.0% | 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 Harris. Using the proficiency score averages, the average test scores for Harris, MO schools is n/a. The average student to teacher ratio is n/a. In Harris, MO, an average of 79.5% of students have completed 8th grade and an average of 71.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Spickard, MO | 314 | 50% | 4.2% |
| Princeton, MO | 1,211 | 50% | 3.1% |
| Galt, MO | 175 | 43% | 11.5% |
| Newtown, MO | 290 | 40% | 16.7% |
| Mercer, MO | 323 | 38% | 21.9% |
| Harris, MO | 46 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Interior, SD | 47 | 50% | 4.2% |
| Hamer, ID | 45 | 50% | 4.2% |
| Paynes Creek, CA | 47 | 50% | 4.2% |
| Clinchport, VA | 48 | 87% | 81.3% |
| Chenega, AK | 48 | 50% | 4.2% |
| Harris, MO | 46 | n/a |
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