During a recent training course I ran, one of the delegates made a joke about the nature of agile estimation in Scrum teams resembling a "séance"; whereby the team gathers around the table and stares at a number of user story cards expecting something unnatural to happen. How true! This gave me an idea for a different type of iterative estimation that I tried in practice with ‘Team Woodstock’.
External consultants bring a wealth of experience and an objective perspective to the classroom. However, we have been experimenting with running internal certified ScrumMaster courses ourselves. Bringing the training in-house has resulted in some significant benefits but has also brought some significant challenges.