I’ve just read an outstanding book. Mark McCourt’s Teaching for Mastery is an excellent resource for maths education specialists. What’s so compelling about it is how clearly Mark understands the art of maths education. One part in particular struck a chord with me. He states that in order to convert to mixed ability classes from a setted structure, a school needs five or six years of commitment, forethought and funding to sufficiently develop their teacher’s mathematical pedagogy.