As a teacher in an inner-city school Lucy Crehan was exasperated with ever-changing government policy claiming to be based on lessons from top-performing' education systems She resolved to find out what was really going on in the classrooms of countries whose teenagers ranked top in the world in reading maths & science Cleverlands documents Crehan's journey around the world weaving together her experiences with research on policy history psychology & culture to offer extensive new insights into what we can learn from these countries