Background: Professional development (PD) in a range of occupations has become increasingly digitised. Numerous digital courses are available, with evidence that social media, blogs and apps are increasingly being used for PD. Yet despite clear benefits, there is little robust evidence on the characteristics of digital PD that impact positively on…

This article examined the literature on best practices in content-specific professional development and then aligns this work with the practices of a citywide afterschool chess program run by After School Activities Partnerships (ASAP) in Philadelphia. School teachers, out-of-school time (OST) staff, and youth workers readied themselves to think…