| Index | Lannon | Wisconsin | National |
| Average Test Scores | 75% | 41% | 48% |
| Student/Teacher ratio | 15:1 | 14:1 | 16:1 |
| Total public schools | 1 | 1,869 | 79,221 |
| Total private schools | 1 | 872 | 24,874 |
| Total post-secondary schools | n/a | 114 | 7,963 |
| Index | Lannon | Wisconsin | National |
| Completed 8th grade | 91.4% | 89.0% | 84.3% |
| Completed high school | 91.1% | 87.8% | 83.0% |
| Completed some college | 54.4% | 59.7% | 59.4% |
| Completed associate degree | 29.3% | 38.7% | 38.5% |
| Completed bachelors | 16.4% | 28.4% | 30.3% |
| Completed masters | 4.8% | 9.6% | 11.5% |
| Completed professional degree | 0.5% | 2.7% | 3.3% |
| Completed doctorate | 0.5% | 1.1% | 1.3% |
There are a total of 1 public schools, 1 private schools and n/a post-secondary schools in Lannon. Using the proficiency score averages, the average test scores for Lannon, WI schools is 75%. The average student to teacher ratio is 15:1. In Lannon, WI, an average of 91.4% of students have completed 8th grade and an average of 91.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Merton, WI | 3,721 | 72% | 49.0% |
| North Prairie, WI | 2,542 | 72% | 49.0% |
| Elm Grove, WI | 6,156 | 69% | 44.3% |
| Hartland, WI | 9,317 | 69% | 44.0% |
| Cedarburg, WI | 11,592 | 68% | 40.8% |
| Lannon, WI | 1,184 | 75% | 55.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Harvard, NE | 1,184 | 42% | 13.5% |
| Eclectic, AL | 1,184 | 52% | 8.3% |
| Strodes Mills, PA | 1,184 | 65% | 35.4% |
| Califon, NJ | 1,184 | 69% | 43.1% |
| Gueydan, LA | 1,184 | 86% | 78.6% |
| Lannon, WI | 1,184 | 75% | 55.2% |
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