Cristina de la Villa González is a research officer at the Educational Sociology Department at Aarhus University. Cristina de la Villa González has a background as social educator and educational sociologist and specializes in the data management of IEA-studies: TIMSS, PIRLS, REDS, ICILS Teacher Panel and ICCS. Her core tasks involve sampling and recruitment of participants, operation and development of the test, management of internal and external stakeholders, recruitment and training of employees for the purposes of test administration and data coding, cleaning of data and data management and dissemination of research fundings.