Central to the Maths Hubs’ work in spreading teaching for mastery expertise and supporting schools in introducing teaching for mastery approaches is the growing cadre of primary Mastery Specialist teachers. Each year, starting in 2015-2016, 140 primary teachers - four from each Maths Hub - complete a programme of professional development to become Mastery Specialists. In every subsequent year, each of these teachers leads a Teaching for Mastery Work Group, with participant teachers from around six primary schools within their Maths Hub area, so that these schools can start to introduce teaching for mastery themselves. In this way, by the end of the 2019-2020 school year, there will be 700 primary Mastery Specialists established and operational, who will collectively have worked with more than 8,000 other primary schools, which represents around half of all primary schools in England.
There is also a smaller programme to develop Mastery Specialists in secondary schools. This began in 2016-2017 and is more exploratory in nature.