Here’s a general guideline to consider:
Beginner: A rider with limited experience, is unable to post the trot and does not canter.
Novice: A rider who can mount and dismount unassisted, is capable of applying basic aids, is comfortable and in control at the walk, moderate length posting trots, and short canters.
Intermediate: A rider who has a firm seat, is confident and in control at all paces, including rising trot, two point canters, and gallops, but does not ride regularly.
Strong intermediate: An intermediate rider who rides regularly and is comfortable in the saddle for at least 6 hours per day.
Advanced: All of the mentioned abilities, plus an independent seat, soft hands, and a desire to handle a spirited horse in open country.