Successful accomplishment of a project requires a plan. If that project involves other people, they need to be trained to do the task correctly the first time. No do-overs, please!
The Bureau of the Census needed to hire and train 140,000 enumerators (all temporary workers) to count 152.3 million people during the course of the 1950 census. A four-month training plan was devised beginning with “Chief Instructors” who taught “Instructors” who taught “Crew Leaders” who then taught the Enumerators. The time schedule was tight for a reason. If you train people too far in advance of when before they need the information, they will forget important details. Adapted from 1950 Census: It Took More Than 148,000 People to Make it Happen!