| Index | Green Mountain | Iowa | National |
| Average Test Scores | 75% | 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 | Green Mountain | Iowa | National |
| Completed 8th grade | 82.4% | 89.2% | 84.3% |
| Completed high school | 82.4% | 87.7% | 83.0% |
| Completed some college | 35.2% | 59.8% | 59.4% |
| Completed associate degree | 15.4% | 38.4% | 38.5% |
| Completed bachelors | 12.1% | 27.2% | 30.3% |
| Completed masters | 0.0% | 8.7% | 11.5% |
| Completed professional degree | 0.0% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Green Mountain. Using the proficiency score averages, the average test scores for Green Mountain, IA schools is 75%. The average student to teacher ratio is n/a. In Green Mountain, IA, an average of 82.4% of students have completed 8th grade and an average of 82.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Le Grand, IA | 842 | 75% | 56.3% |
| Union, IA | 412 | 72% | 50.0% |
| Garwin, IA | 640 | 70% | 44.8% |
| Conrad, IA | 1,224 | 69% | 42.7% |
| Marshalltown, IA | 26,957 | 58% | 20.7% |
| Green Mountain, IA | 182 | 75% | 55.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Washta, IA | 183 | 67% | 39.6% |
| Marion, ND | 181 | 60% | 25.0% |
| Medicine Lake, MT | 183 | 50% | 4.2% |
| Hobson, MT | 183 | 53% | 11.1% |
| Artesian, SD | 181 | 50% | 4.2% |
| Green Mountain, IA | 182 | 75% | 55.2% |
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