| Index | Terril | Iowa | National |
| Average Test Scores | 57% | 69% | 48% |
| Student/Teacher ratio | n/a | 13:1 | 16:1 |
| Total public schools | n/a | 1,101 | 79,221 |
| Total private schools | n/a | 208 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Terril | Iowa | National |
| Completed 8th grade | 83.5% | 89.2% | 84.3% |
| Completed high school | 83.5% | 87.7% | 83.0% |
| Completed some college | 54.1% | 59.8% | 59.4% |
| Completed associate degree | 28.5% | 38.4% | 38.5% |
| Completed bachelors | 20.7% | 27.2% | 30.3% |
| Completed masters | 5.0% | 8.7% | 11.5% |
| Completed professional degree | 0.8% | 2.7% | 3.3% |
| Completed doctorate | 0.8% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Terril. Using the proficiency score averages, the average test scores for Terril, IA schools is 57%. The average student to teacher ratio is n/a. In Terril, IA, an average of 83.5% of students have completed 8th grade and an average of 83.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Spirit Lake, IA | 5,248 | 82% | 70.1% |
| Spencer, IA | 11,331 | 79% | 63.5% |
| Arnolds Park, IA | 999 | 72% | 50.0% |
| Milford, IA | 3,086 | 70% | 44.8% |
| Emmetsburg, IA | 3,851 | 66% | 37.2% |
| Terril, IA | 356 | 57% | 18.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Merna, NE | 356 | 56% | 16.7% |
| Shannon, NC | 356 | 11% | 77.1% |
| Freedom, OK | 356 | 45% | 6.3% |
| Leonard, MI | 356 | 58% | 20.3% |
| Bowler, WI | 356 | 17% | 64.6% |
| Terril, IA | 356 | 57% | 18.8% |
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