| Index | Granger | Iowa | National |
| Average Test Scores | 87% | 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 |
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| Index | Granger | Iowa | National |
| Completed 8th grade | 94.2% | 89.2% | 84.3% |
| Completed high school | 91.5% | 87.7% | 83.0% |
| Completed some college | 71.4% | 59.8% | 59.4% |
| Completed associate degree | 51.9% | 38.4% | 38.5% |
| Completed bachelors | 38.3% | 27.2% | 30.3% |
| Completed masters | 8.9% | 8.7% | 11.5% |
| Completed professional degree | 3.1% | 2.7% | 3.3% |
| Completed doctorate | 1.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Granger. Using the proficiency score averages, the average test scores for Granger, IA schools is 87%. The average student to teacher ratio is n/a. In Granger, IA, an average of 94.2% of students have completed 8th grade and an average of 91.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Woodward, IA | 1,235 | 86% | 78.1% |
| Alleman, IA | 438 | 85% | 77.8% |
| Waukee, IA | 22,598 | 85% | 76.3% |
| Polk City, IA | 4,797 | 85% | 76.0% |
| Grimes, IA | 13,746 | 84% | 75.8% |
| Granger, IA | 1,890 | 87% | 81.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Bertram, TX | 1,890 | 40% | 17.7% |
| Middleport, NY | 1,889 | 69% | 43.2% |
| Wellston, MO | 1,891 | 11% | 77.1% |
| Belleville, KS | 1,889 | 38% | 20.3% |
| St. Francisville, LA | 1,891 | 80% | 66.7% |
| Granger, IA | 1,890 | 87% | 81.3% |
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