On 25 and 26 November, Leiden University is hosting a new two day Master Class entitled Big Data for Policymakers in The Hague. This will provide an intensive introduction and understanding of what Big Data is and the ways it is revolutionising the public sector. This Master Class is aimed exclusively for the public sector and provides case study examples and discussions for this. As governments across the world begin embracing the Big Data revolution, now is the ideal time to gain a proper knowledge of what this is and learn how to lead that drive in your organisation. No previous data or computer science experience is required for this class.