A "trainer course" refers to a program or training session that helps individuals learn how to become trainers. It provides them with the knowledge, skills, and tools needed to effectively teach others in a particular subject or field.
This course is far and away the best value for time and money of any dog trainer course I have seen. (vsdogtrainingacademy.com)
The training of Trainer course on Sustainable Clean Energy Entrepreneurship which is being held in Kenya has representatives from 6 countries including Kenya, Uganda, Tanzania, Rwanda, Nigeria and India. (greenbeltmovement.org)