| Index | Spencer | Iowa | National |
| Average Test Scores | 79% | 69% | 48% |
| Student/Teacher ratio | 14:1 | 13:1 | 16:1 |
| Total public schools | 6 | 1,101 | 79,221 |
| Total private schools | 2 | 208 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Spencer | Iowa | National |
| Completed 8th grade | 89.8% | 89.2% | 84.3% |
| Completed high school | 89.1% | 87.7% | 83.0% |
| Completed some college | 58.9% | 59.8% | 59.4% |
| Completed associate degree | 33.3% | 38.4% | 38.5% |
| Completed bachelors | 21.5% | 27.2% | 30.3% |
| Completed masters | 5.0% | 8.7% | 11.5% |
| Completed professional degree | 1.5% | 2.7% | 3.3% |
| Completed doctorate | 0.4% | 1.1% | 1.3% |
There are a total of 6 public schools, 2 private schools and n/a post-secondary schools in Spencer. Using the proficiency score averages, the average test scores for Spencer, IA schools is 79%. The average student to teacher ratio is 14:1. In Spencer, IA, an average of 89.8% of students have completed 8th grade and an average of 89.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Everly, IA | 595 | 70% | 45.8% |
| Milford, IA | 3,015 | 70% | 44.8% |
| Royal, IA | 505 | 65% | 35.4% |
| Ruthven, IA | 771 | 58% | 19.8% |
| Terril, IA | 343 | 57% | 18.8% |
| Spencer, IA | 11,038 | 79% | 63.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Franklin Lakes, NJ | 11,044 | 76% | 57.7% |
| Ontario, OR | 11,031 | 36% | 24.3% |
| Middle Island, NY | 11,030 | 59% | 23.7% |
| Munhall, PA | 11,049 | 49% | 2.4% |
| Holbrook, MA | 11,051 | 47% | 1.6% |
| Spencer, IA | 11,038 | 79% | 63.5% |
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