In company with other leading jurisdictions around the world, Hong Kong is taking important steps to mainstream computational thinking education (CTE) into the primary grades curriculum. At the vanguard of this movement in Hong Kong, CoolThink@JC is a 3-year course sequence for upper primary students designed to develop computational thinking skills and digital creativity, problem-solving, and other 21st century skills. After a successful 4-year pilot, CoolThink@JC is scaling within Hong Kong and receiving increasing recognition on the global stage. This benchmarking report uses publicly available reporting to compare Hong Kong's CoolThink initiative to analogous experiences in three leading jurisdictions (the United Kingdom, Singapore, and the two cities of Guangzhou and Shenzhen in Guangdong Province, China). Looking across five dimensions that are fundamental to successful adoption at scale, the report offers a framework for reviewing CoolThink@JC's accomplishments to date and CTE initiatives in other jurisdictions. [CoolThink@JC is created and funded by The Hong Kong Jockey Club Charities Trust, and co-created by The Education University of Hong Kong, Massachusetts Institute of Technology, and City University of Hong Kong.]