Mark Hereward is Associate Director for Data & Analytics for UNICEF, leading a team who support collection, assessment, storage, analysis and communication of data concerning the situation of children. Data collection includes the Multiple-Indicator Cluster Survey programme which has been running for 20 years, as well as harvesting data from other surveys, administrative and other sources. The data are published on the UNICEF website, in the tables of State of the World’s Children report, and are used in analytical reports. The section also assesses data on the seventeen SDG indicators for which UNICEF is joint or single custodian, to give internationally-comparable high-quality data on SDG reporting, stores them and transmits them to Statistics Division for the global SDG progress reports. And he oversees the work to support UNICEF’s 130 Country Offices in their efforts to build capacity and provide technical assistance to government and civil society on monitoring the situation of children.