Lisle named among America's Most Challenging High Schools
The rankings are determined by an index score that consists of the number of college-level tests given at a school in the previous year divided by the number of graduates.
Lisle ranked 69th in Illinois. The school has a nearly 94 percent four-year graduation rate and an average ACT score of 22.3, the Post said.
Nearby Neuqua Valley High School in Naperville ranked 36th.