How Long Does It Take to Develop One Hour of Training? Updated for 2017 - Robyn Defelice, ATD

In this article, we will explore the results from a 2017 survey, compare that data to the previous two studies, and discuss a few trends that have emerged over the years. If you are unfamiliar with the research, the data helps to squelch the desire to say, “It depends…” when a client asks how long it will take to develop training. These numbers provide another way for project planners to budget time and resources, and they can be used in place of or in conjunction with estimates based on old projects with similar needs. At a minimum, it provides a method for making estimates, comparisons, or both.  https://www.td.org/insights/how-long-does-it-take-to-develop-one-hour-of-training-updated-for-2017