| Index | Grinnell | Kansas | National |
| Average Test Scores | 38% | 35% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 970 | 79,221 |
| Total private schools | n/a | 190 | 24,874 |
| Total post-secondary schools | n/a | 86 | 7,963 |
| Index | Grinnell | Kansas | National |
| Completed 8th grade | 91.6% | 87.4% | 84.3% |
| Completed high school | 89.3% | 86.1% | 83.0% |
| Completed some college | 47.4% | 63.7% | 59.4% |
| Completed associate degree | 30.2% | 39.8% | 38.5% |
| Completed bachelors | 16.3% | 31.6% | 30.3% |
| Completed masters | 2.8% | 11.4% | 11.5% |
| Completed professional degree | 0.9% | 3.0% | 3.3% |
| Completed doctorate | 0.5% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Grinnell. Using the proficiency score averages, the average test scores for Grinnell, KS schools is 38%. The average student to teacher ratio is n/a. In Grinnell, KS, an average of 91.6% of students have completed 8th grade and an average of 89.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Grainfield, KS | 339 | 50% | 4.2% |
| Oakley, KS | 2,141 | 41% | 15.3% |
| Grinnell, KS | 285 | 38% | 21.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Faith, SD | 285 | 58% | 19.8% |
| Wallace, NE | 285 | 60% | 25.0% |
| Valley Springs, AR | 284 | 63% | 30.2% |
| Chapman, NE | 284 | 45% | 6.3% |
| Ambler, AK | 284 | 10% | 79.2% |
| Grinnell, KS | 285 | 38% | 21.9% |
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