| Index | Janesville | Wisconsin | National |
| Average Test Scores | 39% | 41% | 48% |
| Student/Teacher ratio | 13:1 | 14:1 | 16:1 |
| Total public schools | 20 | 1,869 | 79,221 |
| Total private schools | 10 | 872 | 24,874 |
| Total post-secondary schools | 1 | 114 | 7,963 |
| Index | Janesville | Wisconsin | National |
| Completed 8th grade | 87.0% | 89.0% | 84.3% |
| Completed high school | 86.0% | 87.8% | 83.0% |
| Completed some college | 55.7% | 59.7% | 59.4% |
| Completed associate degree | 32.2% | 38.7% | 38.5% |
| Completed bachelors | 22.0% | 28.4% | 30.3% |
| Completed masters | 7.2% | 9.6% | 11.5% |
| Completed professional degree | 1.6% | 2.7% | 3.3% |
| Completed doctorate | 0.5% | 1.1% | 1.3% |
There are a total of 20 public schools, 10 private schools and 1 post-secondary schools in Janesville. Using the proficiency score averages, the average test scores for Janesville, WI schools is 39%. The average student to teacher ratio is 13:1. In Janesville, WI, an average of 87.0% of students have completed 8th grade and an average of 86.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Milton, WI | 5,594 | 50% | 4.2% |
| Edgerton, WI | 5,594 | 44% | 8.3% |
| Evansville, WI | 5,374 | 41% | 13.9% |
| Whitewater, WI | 14,762 | 41% | 14.9% |
| Orfordville, WI | 1,450 | 38% | 20.5% |
| Janesville, WI | 64,415 | 39% | 18.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Noblesville, IN | 64,430 | 59% | 22.4% |
| Castro Valley, CA | 64,392 | 59% | 23.8% |
| Eden Prairie, MN | 64,481 | 71% | 47.5% |
| Port Charlotte, FL | 64,335 | 51% | 7.2% |
| Tulare, CA | 64,546 | 35% | 26.7% |
| Janesville, WI | 64,415 | 39% | 18.1% |
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