| Index | Parnell | 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 | Parnell | Missouri | National |
| Completed 8th grade | 77.3% | 86.0% | 84.3% |
| Completed high school | 75.3% | 84.2% | 83.0% |
| Completed some college | 27.8% | 57.7% | 59.4% |
| Completed associate degree | 11.3% | 35.2% | 38.5% |
| Completed bachelors | 7.2% | 27.6% | 30.3% |
| Completed masters | 4.1% | 10.4% | 11.5% |
| Completed professional degree | 1.0% | 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 Parnell. Using the proficiency score averages, the average test scores for Parnell, MO schools is n/a. The average student to teacher ratio is n/a. In Parnell, MO, an average of 77.3% of students have completed 8th grade and an average of 75.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Maryville, MO | 11,641 | 55% | 14.9% |
| Pickering, MO | 170 | 55% | 14.6% |
| Ravenwood, MO | 548 | 42% | 13.0% |
| Grant City, MO | 1,010 | 35% | 28.1% |
| Hopkins, MO | 361 | 30% | 38.5% |
| Parnell, MO | 180 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Rentz, GA | 180 | 53% | 10.4% |
| Elida, NM | 180 | 30% | 38.0% |
| Hardyville, KY | 180 | 50% | 3.1% |
| Fort Apache, AZ | 180 | 5% | 89.6% |
| Poneto, IN | 180 | 51% | 6.8% |
| Parnell, MO | 180 | n/a |
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