SHANGHAI students’ stellar performance on international tests is linked to a strong education system and great teachers, according to a report released by the World Bank report at a global conference on basic education, which kicked off in the city yesterday and will run until tomorrow. The report, “How Shanghai Does It: Insights and Lessons from the Highest-Ranking Education System in the World,” was produced based on educational policies, school-based surveys and existing research data, such as the results of the Program for International Student Assessment (PISA), a global assessment of 15-year-olds’ educational abilities, according to the World Bank Group.