This document discusses the educational data movement. It begins by comparing how data is used across different levels in education from national to classroom levels. It then analyzes why using data in education is both necessary and difficult due to issues like imprecise measurements and fragmentation. The document also examines quantitative and qualitative shifts in education brought about by more data, including a reorientation around competencies and blended learning. Finally, it explores viewing education as an entire sector and mapping innovations across different educational levels and scales.