At one time, internationally comparable
information on student performance was not available for a sufficient number of countries over a long enough period of time to allow for systematic study, which is why economists relied
upon the less
informative measures of school attainment.
Below, you will find the following sections: 1) Direct sources — sources for specific pieces of
information or statistics cited in my presentation; 2) Secondary sources — sources that I relied
upon for general thematic
information; 3) Further reading — sources that I read and found generally
informative while I was researching this presentation, but which I did not directly rely
upon for my presentation.