A training department revamp is a huge, but not impossible, undertaking, and a chore that may be inevitable every now and then. Taking the plunge and deciding to rebuild one's training structure can offer a sizable return on investment to one's senior executives, and a more effective learning strategy for employees. The tricky part is ensuring the changes represent a clear improvement over the old training department. In this article, four companies (Chesterfield University, Mohawk Industries, Loews Hotels, and McDonald's USA) describe how they have accomplished this.