If you've been paddling for a while, maybe your whole life, and have a broad knowledge of the sport, it is still important to take classes, assessments, and updates. This is because in each class you can learn something new, potentially a new way of explaining a technique or maneuver. The more people that you paddle with and learn from, will only give you more skills to improve your own paddling abilities or help someone else improve their own.
If you have a vast knowledge of the sport, it is a good idea to round out your knowledge with rescue skills, in order to enable you to help other people, or yourself, in an unideal situation. Not only does ACA offer classes for beginners, but we offer intermediate and advanced level courses that will take your paddling to a new height.