Visible Learning: A Synthesis of over 800 Meta-analyses Relating to Achievement, by John Hattie.
Hot off the press this book is a must for any researcher or educator who wants to improve student achievement.
Change Wars Edited by Andy Hargreaves and Michael Fullan. this book contains thoughts from leading educators such as Linda Darling-Hammond, Richard Elmore and Ben Levin.
The Outliers
Malcolm Gladwell