If you have not heard of mastery learning, you are not alone. Although its concepts have been around for 40 years, in practice, it is largely a phenomenon of K-12 education, where it has been applied with success. It is, however, largely unknown in the adult-learning arena (or, if it has been accepted, it's a well-kept secret). Mastery learning came to my attention when my daughter was accepted to the Phoenix Middle School in Worthington, Ohio, where a dedicated effort to end a reliance on g
