| Index | Armstrong | 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 | Armstrong | Missouri | National |
| Completed 8th grade | 80.5% | 86.0% | 84.3% |
| Completed high school | 77.1% | 84.2% | 83.0% |
| Completed some college | 35.6% | 57.7% | 59.4% |
| Completed associate degree | 15.1% | 35.2% | 38.5% |
| Completed bachelors | 11.2% | 27.6% | 30.3% |
| Completed masters | 1.5% | 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 Armstrong. Using the proficiency score averages, the average test scores for Armstrong, MO schools is n/a. The average student to teacher ratio is n/a. In Armstrong, MO, an average of 80.5% of students have completed 8th grade and an average of 77.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Fayette, MO | 2,677 | 52% | 8.7% |
| Huntsville, MO | 1,820 | 51% | 6.3% |
| Higbee, MO | 597 | 40% | 17.2% |
| Harrisburg, MO | 340 | 39% | 19.1% |
| Clifton Hill, MO | 76 | 37% | 22.9% |
| Armstrong, MO | 262 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Hayes Center, NE | 262 | 45% | 6.3% |
| Mekoryuk, AK | 262 | 20% | 58.3% |
| Laketown, UT | 262 | 54% | 11.5% |
| Klickitat, WA | 262 | 40% | 16.7% |
| Harrisonburg, LA | 262 | 80% | 65.6% |
| Armstrong, MO | 262 | n/a |
Here are the best places to live in Missouri
See the best places to live in Armstrong
These are the largest cities in Missouri
Check out the 10 most dangerous cities in Missouri