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B-S-J-Z (China) refers to four major administrative divisions in mainland China—Beijing, Shanghai, Jiangsu, and Zhejiang—assessed as a unified entity in international comparative studies, most notably the OECD’s PISA (Programme for International Student Assessment) tests.
Context in PISA Testing
Acronym Breakdown:
B: Beijing (Municipality)
S: Shanghai (Municipality)
J: Jiangsu (Province)
Z: Zhejiang (Province)
Why it is grouped: The OECD does not conduct nationwide sampling across all of China’s provinces for PISA assessments. Instead, it evaluates students from these four economically developed eastern regions as a designated sub-national group labeled B-S-J-Z (China).
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