Skills with People is not primarily a remedial course. But it can be, it depends on your need.
People who come on the course fall roughly into three groups:-
Successful people who because they're preparing themselves for a different or more demanding role want to enhance their already well developed skills. These are the ones who probably get more out of the course than anyone else. What they bring to the course is a well-developed love of learning. That's why they're already successful. They catch on immediately to the power of the simple skills this course provides, and are able to adapt them and apply them imaginatively to the situations that give them their greatest challenges.
People who because they're not always using the most effective approaches are not always as successful as they'd like to be. Recognition of a shortcoming provides a powerful incentive for learning new approaches. What they get out of the course is a clear understanding of why some approaches are more successful than others, plenty of helpful feedback about how they come across, and plenty of individual coaching on how to make the necessary changes in their approach.
People who've discovered there's a problem with some of their relationships at work that could threaten their career if they don't do something about it. The course has a very good track-record of helping these people improve their relationships.