Mark is the UK's leading authority on teaching for mastery. He has trained over 2000 schools in mastery models for schooling in the UK and overseas.  

A leading figure in mathematics education, Mark has led many large-scale government education initiatives, both in the UK and overseas. Mark was a Director at the National Centre for Excellence in the Teaching of Mathematics (NCETM) and has also been a school leader, an Advanced Skills Teacher, a school inspector and a teacher trainer. He founded and was Chairman of the Teacher Development Trust.  

Mark has extensive experience of mathematics teaching and learning across all age and ability groups, having taught students from age 3 to PhD. Mark is the author of several books, including the best-selling Teaching for Mastery, in which he outlined his long-held belief that all pupils can learn well.