| Index | Lewis | Wisconsin | National |
| Average Test Scores | n/a | 41% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 1,869 | 79,221 |
| Total private schools | n/a | 872 | 24,874 |
| Total post-secondary schools | n/a | 114 | 7,963 |
| Index | Lewis | Wisconsin | National |
| Completed 8th grade | 69.1% | 89.0% | 84.3% |
| Completed high school | 69.1% | 87.8% | 83.0% |
| Completed some college | 34.6% | 59.7% | 59.4% |
| Completed associate degree | 18.5% | 38.7% | 38.5% |
| Completed bachelors | 11.1% | 28.4% | 30.3% |
| Completed masters | 2.5% | 9.6% | 11.5% |
| Completed professional degree | 0.0% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Lewis. Using the proficiency score averages, the average test scores for Lewis, WI schools is n/a. The average student to teacher ratio is n/a. In Lewis, WI, an average of 69.1% of students have completed 8th grade and an average of 69.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Webster, WI | 660 | 36% | 25.3% |
| Grantsburg, WI | 1,279 | 35% | 27.3% |
| Frederic, WI | 1,171 | 35% | 28.1% |
| Luck, WI | 1,170 | 28% | 41.1% |
| Siren, WI | 777 | 25% | 49.0% |
| Lewis, WI | 146 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Cloverdale, OR | 146 | 42% | 12.5% |
| Downsville, LA | 146 | 69% | 43.8% |
| Crossnore, NC | 146 | 33% | 30.7% |
| Chinese Camp, CA | 146 | 60% | 25.0% |
| Orrville, AL | 145 | 23% | 51.6% |
| Lewis, WI | 146 | n/a |
Here are the best places to live in Wisconsin
Check out the 10 most dangerous cities in Wisconsin
See the best places to live in Lewis
These are the largest cities in Wisconsin