What is PISA? Why do they only target 15-16 year-olds? Are they a representative sample?
Can the entire test be lumped into 3 categories: Math, Science, and Reading? All of these subjects are interrelated.
Anyone can play with these numbers until a preferable conclusion is made. For example, the first graph that the article presents makes Greece look half as competent as Finland.
What is PISA? Why do they only target 15-16 year-olds? Are they a representative sample?
Can the entire test be lumped into 3 categories: Math, Science, and Reading? All of these subjects are interrelated.
Anyone can play with these numbers until a preferable conclusion is made. For example, the first graph that the article presents makes Greece look half as competent as Finland.