CoderDojo is a global volunteer-led community of free programming workshops for young people. The movement began in 2011 as a grassroots organisation with each individual clubs (called a dojo [1], after the Japanese name for a hall or place for immersive learning, experiential learning) acting independently, with one founding principle: One Rule, Be Cool. Supporters of CoderDojo believe it is part of the solution to address the global shortage of programmers by getting young people more involved with ICT learning. The movement has seen significant growth since its founding. The CoderDojo Foundation estimates 1,250 Dojos spread across 69 countries, with a growth rate of several new Dojos every week.