Newsweek magazine has included six Allegheny County high schools on its list of the 1,500 top U.S. public high schools.

The school districts and their ranks are: Pine-Richland, 814; Upper St. Clair, 917; Quaker Valley, 1,163; Mt. Lebanon, 1,181; North Hills, 1,317; and North Allegheny, 1,326.

The rankings are based on a "challenge index" which takes the number of Advanced Placement, International Baccalaureate or Cambridge tests given at a school in May and divides that by the number of seniors graduating in May or June. Schools with a ratio of at least 1.0 are included on the list. By this measurement, these are in the top 6 percent of public high schools nationwide.