translation.en: A major overhaul of Poland's education helped to dramatically reduce between variability among schools, turn around many of the lowest-performing schools, and raise performance by over half a school year.
translation.zh: 波兰教育的主要革新 在于大幅度减少学校间的差异， 使很多表现不佳的学校得到重生， 并在半年时间内就提高了教学业绩。