Watch this short video and then respond to the following question: https://www.youtube.com/watch?time_continue=161&v=i4RGqzaNEtg&feature=emb_title

What role does equivalence play in a research project like PISA, which seeks to accurately measure learning across dozens of countries? If you were working on this project, how would you ensure conceptual equivalence? How would you ensure measurement equivalence?