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The problem of using PISA results for analyzing upper tail of U.S. student performance is that it's not clear how representative they are. How many high achiev
by vasilipupkin 12y ago
The problem of using PISA results for analyzing upper tail of U.S. student performance is that it's not clear how representative they are. How many high achieving US students bother taking the test, when it has no impact on their college acceptance, etc. ? Did Zuckerberg take it? What percentage of Ivy League incoming freshman class take it ?
- vonmoltke 12y agoBased on the U.S. Department of Education's description of the sampling process[1], it seems like the representativeness is dependent on how the school framing is done. It's not clear from that description what happens with individual students at the selected schools. You could still get distortions if groups of students within the selected schools are over or under represented. [1] http://nces.ed.gov/surveys/pisa/faq.asp#4 http://nces.ed.gov/surveys/pisa/faq.asp#4