Education Sector reports that while Americans love rankings, Newsweek‘s current listing of the top 100 high schools doesn’t quite measure up. Since its inception in 1998, the listing, known as the “Challenge Index,” has become increasingly influential. The index was developed by Washington Post education writer Jay Mathews, and divides the number of AP and IB classes taken by number of graduating seniors. According to Matthews, this is an effective gauge of how effectively a high school prepares its students for secondary education. However, Education Sector believes that a successful high school should “show high levels of student achievement, graduate almost all of its students and not let any demographic subgroup suffer at the expense of others.” According to Education Sector’s analysis, many of the schools on the Newsweek list do not meet these criteria…