Through the generosity of the Moore Data Driven Discovery Initiative, assessment work has been undertaken across both Data and Software Carpentry to help build an evidence base to complement the large body of existing anecdotal evidence that Carpentry-style training is both useful and effective in improving researchers’ work practices.This analysis of how Carpentries workshops have impacted learners long-term has been extremely insightful. In general, our workshops are helping learners improve their efficiency with managing and analyzing data. Learners are taking advantage of online resources to improve their skills, and many see value in becoming involved longer term with our community.