 In 2011, 46.9 percent of Pennsylvania school districts achieved Adequate Yearly Progress (AYP) based on student performance.An additional 37.8 percent of Pennsylvania public school districts made AYP based on a calculated method called safe harbor, 8.2 percent on the growth model and 0.8 percent on a two-year average performance.West York Area School District achieved AYP status each year from 2004 to 2010, while in 2003 the District was in Warning status due to lagging student achievement.