The recall, or coming when called is one of the most important cues you can teach your pet.
With a reliable recall, you can keep your pet from running into danger, get them to come away from something they shouldn't be doing, and just get their attention when you want to give them some love.
People often make the mistake of poisoning the cue by calling their pet, then punishing them for something they did 'wrong'. The punishment doesn't have to be physical, it may just be a raised voice, or loss of freedom for a short time. The animal doesn't make the distinction. If something negative happens after you call them to 'come' then they will be hesitant to come in the future.
The class is meant for any dog or cat, whether they've been taught 'come' before or not. We will work on teaching you how to call your pet and reward them appropriately without damaging the cue, and teach the pet that coming when called is safe and worthwhile.
To get a reliable recall takes a lot of practice in many locations. It's a basic requirement for all forms of canine competition and, to me, a necessity for the safety of our pets. More than one session is recommended.