Over the past decade, the term masterclass has become one of the most overused phrases in education and training. Once reserved for exclusive sessions where a celebrated artist shared craft secrets with a select group of apprentices, the masterclass has now become a staple in nearly every professional field. From acting and film to business and technology, masterclasses are marketed as opportunities to condense decades of wisdom into hours of focused learning. Critics sometimes dismiss them as a fad – a modern version of the seminar dressed up in trendy branding. Others argue that too many masterclasses overpromise and underdeliver,…