Utilize people with good training skills. Training programs are successes or failures depending on the talent of the people designing and implementing the courses. A subject matter expert with poor presentation skills won't get the job done. Don't be fooled into thinking that anyone who is the subject matter expert can design and present the class. Poor instruction can do more harm than good.
Students fail to get the correct information and can resent the topic if it is presented poorly.
Safety training has to be developed. Someone is needed who can look through training requirements and translate them into learning objectives. This is a time when the subject matter expert and a trainer need to work together. When the objectives are reviewed, you can identify the method of instruction. There are many ways to share the information, and a good instructor will identify a number of methods.