世界银行：新冠肺炎对学生学习的影响：使用自适应技术评估学习损失（英文版）

This paper quantifies learning losses between 2020 and 2022 in the Dominican Republic, an upper-middle-income country. The paper uses data from a sample of ninth-grade students who benefited from computer adaptive learning software during this period. This study is among a few to measure actual losses among secondary school students, and it is the first to use detailed data on students’ mastery of individual math topics to do so. The findings show no evidence of learning losses in our analysi