| Index | Foster | 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 | Foster | Missouri | National |
| Completed 8th grade | 84.3% | 86.0% | 84.3% |
| Completed high school | 83.0% | 84.2% | 83.0% |
| Completed some college | 41.2% | 57.7% | 59.4% |
| Completed associate degree | 30.1% | 35.2% | 38.5% |
| Completed bachelors | 28.1% | 27.6% | 30.3% |
| Completed masters | 2.6% | 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 Foster. Using the proficiency score averages, the average test scores for Foster, MO schools is n/a. The average student to teacher ratio is n/a. In Foster, MO, an average of 84.3% of students have completed 8th grade and an average of 83.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Hume, MO | 308 | 55% | 14.6% |
| Rich Hill, MO | 1,402 | 48% | 0.5% |
| Butler, MO | 4,125 | 42% | 13.0% |
| Amoret, MO | 153 | 40% | 16.7% |
| La Cygne, KS | 1,169 | 30% | 38.5% |
| Foster, MO | 74 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Lumber Bridge, NC | 74 | 36% | 26.0% |
| Brady, MT | 74 | 50% | 4.2% |
| Port Alexander, AK | 74 | 50% | 4.2% |
| Gabbs, NV | 75 | 50% | 4.2% |
| Omaha, AR | 75 | 51% | 5.7% |
| Foster, MO | 74 | n/a |
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