Glenbard's 4 schools ranked among nation's Most Challenging High Schools 7th year in a row
May 9, 2017 9:15 AM - For the 7th consecutive year, all four high schools in Glenbard District 87 have been named to the Washington Post's list of America's Most Challenging High Schools. Approximately 12% of high schools nationally make the list. The list ranks schools through an index formula that uses the following ratio: the number of Advanced Placement, International Baccalaureate and Advanced International Certificate of Education tests given at a school each year, divided by the number of seniors who graduated that year. In releasing the list, the Washington Post also notes the percentage of students who come from families that qualify for lunch subsidies and the percentage of graduates who passed at least one college-level test during their high school career.