| Index | Delafield | Wisconsin | National | 
| Average Test Scores | 63% | 41% | 48% | 
| Student/Teacher ratio | 16:1 | 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 | 

 
				
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				| Index | Delafield | Wisconsin | National | 
| Completed 8th grade | 96.7% | 89.0% | 84.3% | 
| Completed high school | 95.6% | 87.8% | 83.0% | 
| Completed some college | 78.3% | 59.7% | 59.4% | 
| Completed associate degree | 59.9% | 38.7% | 38.5% | 
| Completed bachelors | 52.3% | 28.4% | 30.3% | 
| Completed masters | 19.0% | 9.6% | 11.5% | 
| Completed professional degree | 4.3% | 2.7% | 3.3% | 
| Completed doctorate | 1.8% | 1.1% | 1.3% | 
There are a total of 1 public schools, 1 private schools and n/a post-secondary schools in Delafield. Using the proficiency score averages, the average test scores for Delafield, WI schools is 63%. The average student to teacher ratio is 16:1. In Delafield, WI, an average of 96.7% of students have completed 8th grade and an average of 95.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. | 
| Lannon, WI | 1,184 | 75% | 55.2% | 
| Sullivan, WI | 710 | 72% | 50.0% | 
| North Prairie, WI | 2,542 | 72% | 49.0% | 
| Merton, WI | 3,721 | 72% | 49.0% | 
| Hartland, WI | 9,317 | 69% | 44.0% | 
| Delafield, WI | 7,541 | 63% | 31.3% | 
| City | Population | Avg. Test Scores | National Avg. | 
| Palmyra, PA | 7,541 | 75% | 56.6% | 
| Berlin, NJ | 7,543 | 48% | = 100 | 
| Hughson, CA | 7,545 | 44% | 7.5% | 
| Fairlawn, OH | 7,536 | 87% | 81.3% | 
| Lander, WY | 7,533 | 49% | 2.3% | 
| Delafield, WI | 7,541 | 63% | 31.3% |