"...erroneous rankings for the high schools on U.S. News & World Report's "Best High Schools" list...."

The National Center for Education Statistics plans to check data on about 5,000 high schools after faulty information from the federal agency led to erroneous rankings for three high schools on U.S. News & World Report’s yearly “Best High Schools” report......However, Jeff Horn, the principal at Green Valley High School in Henderson, Nev., noted that his school’s number 13 ranking was based on federal statistics that mistakenly said his school had 477 students, 111 teachers, and a 100 percent passing rate on Advanced Placement tests that school year. In actuality, the school has about 2,850 students, a student-teacher ratio that is closer to 24 to 1, and an AP pass rate of about 64 percent. Student-teacher ratios and AP pass rates are a part of the magazine’s ranking system...

Education Week:  Statistics Agency to Review 'Best High Schools' Data