John Jerrim: what do international tests tell us?

John Jerrim is a Professor of Education and Social Statistics, and the Director of the Quantitative Social Science Research Centre at UCL Institute of Education.I particularly wanted to learn from him about England's performance in international tests - one of his specialist subjects.We discussed:How John came to write so many papers - and how knows what makes a paper a good ideaThe world of international tests: who runs them, who takes part in them and what's in it for countries, schools, and studentsThe reliability of these tests: in the early 2010s, John argued that England's scores on international tests had fallen because of changes in testing methods. England's test results have tended to rise since then - could we rely on those results?Why the next round of PISA results in England won't be comparable with the last few roundsJohn's take on why test scores have gone up in maths - and what hasn't gone so wellOther elements of John's research, including a recent paper on diminishing student engagement, and a paper on the performance of students of East Asian backgrounds in Australia