| Index | Arnold | Nebraska | National |
| Average Test Scores | 68% | 53% | 48% |
| Student/Teacher ratio | n/a | 13:1 | 16:1 |
| Total public schools | n/a | 780 | 79,221 |
| Total private schools | n/a | 182 | 24,874 |
| Total post-secondary schools | n/a | 56 | 7,963 |
| Index | Arnold | Nebraska | National |
| Completed 8th grade | 92.7% | 88.4% | 84.3% |
| Completed high school | 92.0% | 87.2% | 83.0% |
| Completed some college | 60.1% | 63.7% | 59.4% |
| Completed associate degree | 38.8% | 40.1% | 38.5% |
| Completed bachelors | 23.1% | 30.0% | 30.3% |
| Completed masters | 3.4% | 9.9% | 11.5% |
| Completed professional degree | 0.2% | 2.9% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Arnold. Using the proficiency score averages, the average test scores for Arnold, NE schools is 68%. The average student to teacher ratio is n/a. In Arnold, NE, an average of 92.7% of students have completed 8th grade and an average of 92.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Callaway, NE | 541 | 53% | 9.4% |
| Arnold, NE | 881 | 68% | 40.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Lewisville, AR | 881 | 34% | 30.2% |
| Washington Boro, PA | 881 | 72% | 49.0% |
| Coulterville, IL | 881 | 33% | 32.3% |
| Papaikou, HI | 881 | 25% | 47.9% |
| Foristell, MO | 881 | 55% | 13.5% |
| Arnold, NE | 881 | 68% | 40.6% |
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