A good trainer will incorporate short quizzes, use pre course work, reward positive comments throughout the training and ensure key messages are emphasised and summarised before departing.   Everyone should also be given a take-home guide towards the practical use of the learning material for the job function back at work.  All of which brings us back nicely to retaining good people. Using skilled training experts, be it from within the workforce or from a specialist training organisation, will ensure skills are retained and utilised within a business for a lot longer than if training was put low down on the priorities list.