| Index | Grundy Center | Iowa | National |
| Average Test Scores | 85% | 69% | 48% |
| Student/Teacher ratio | 14:1 | 13:1 | 16:1 |
| Total public schools | 3 | 1,101 | 79,221 |
| Total private schools | n/a | 208 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Grundy Center | Iowa | National |
| Completed 8th grade | 95.9% | 89.2% | 84.3% |
| Completed high school | 92.4% | 87.7% | 83.0% |
| Completed some college | 61.1% | 59.8% | 59.4% |
| Completed associate degree | 39.8% | 38.4% | 38.5% |
| Completed bachelors | 25.6% | 27.2% | 30.3% |
| Completed masters | 6.9% | 8.7% | 11.5% |
| Completed professional degree | 1.5% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of 3 public schools, n/a private schools and n/a post-secondary schools in Grundy Center. Using the proficiency score averages, the average test scores for Grundy Center, IA schools is 85%. The average student to teacher ratio is 14:1. In Grundy Center, IA, an average of 95.9% of students have completed 8th grade and an average of 92.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Dike, IA | 1,239 | 82% | 70.8% |
| New Hartford, IA | 815 | 80% | 65.6% |
| Parkersburg, IA | 1,901 | 75% | 55.2% |
| Union, IA | 424 | 72% | 50.0% |
| Reinbeck, IA | 1,737 | 71% | 47.4% |
| Grundy Center, IA | 2,775 | 85% | 77.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Rogers City, MI | 2,775 | 43% | 9.9% |
| Fayette, MO | 2,776 | 52% | 8.7% |
| Bicknell, IN | 2,776 | 40% | 17.7% |
| Federalsburg, MD | 2,773 | 37% | 23.6% |
| Van, TX | 2,772 | 45% | 6.8% |
| Grundy Center, IA | 2,775 | 85% | 77.8% |
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