Medical products are required to disclose both their intended outcomes and known side effects. Educational policy and practice, however, carries no such labels. Thus, teachers, school leaders, and the public are not told, for example, that "this program helps improve your students' reading scores, but it may make them hate reading…

This guide is intended to stimulate professional reflection, dialogue and debate about mathematics and how to improve it. It draws together themes, features and characteristics of effective improvement in mathematics and descriptions of good practice. It offers a reference point for staff and teachers who are working together to improve…