Dr. Trude Nilsen is Associate Professor of Educational Research and Leader of the research group Large-scale Educational Assessment (LEA) at the Department of Teacher Education and School Research at the University of Oslo, Norway.  She is also the project leader of the project Teachers’ Effect on Student Outcome (TESO).  Trude is an external expert for OECD’s questionnaire expert groups for TALIS and TALIS Starting Strong and for TIMSS Questionnaire Item Review Committee. Trude’s research focuses on teacher effectiveness, educational inequality, applied methodology and international large-scale assessment.