 An additional 37.8 percent of 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.In 2013, Sto-Rox School District's ranking was 487th out of 498 Pennsylvania school districts for student academic achievement.The ranking was based on the last 3 years of student academic performance on the PSSAs for