What steps are schools taking to achieve CT integration? Researchers from Education Development Center (EDC) and the Research Alliance for New York City Schools conducted a five-year study of Robin Hood Learning + Technology Fund’s computational thinking (CT) in-service teacher initiative. Their focus was to learn about the four aspects of the CT teacher professional development and the pathways schools took to integrate CT across the curriculum: Pathway Design, Implementation Activities, Student and Teacher Impact, and Setting Up for Scalability and Sustainability.