The Dutch colorectal cancer screening programme is coordinated by the National Institute for Public Health and the Environment (RIVM). RIVM commissioned the Netherlands Comprehensive Cancer Organisation (IKNL) to carry out national monitoring of the colorectal cancer screening programme on an annual basis. Monitoring ensures the quality of the colorectal cancer screening programme and identifies pertinent issues and bottlenecks. Monitoring is conducted using data from ScreenIT, the national information system for the colorectal cancer screening programme.