An online data monitor enabled national centres to monitor questionnaire return status at any time, as well as the level of questionnaire completion. A final layout verification step was applied to the paper instruments to ensure high questionnaire quality and comparability with the questionnaires delivered on line. The International Research Consortium took care to provide national project managers (NPMs) and their staff with the training they needed to enable them to fulfil all required tasks and activities to the highest possible quality. The TALIS International Research Consortium provided training for national data managers, as well as software that allowed managers to list, select, and administer TALIS instruments in a standardised and controlled way.