We have a 14 month old GSP/Lab Mix and we were interested in seeing if we could train her to pass the Canine Good Citizen test. Has anyone trained their dogs for this test? Also, my wife is interested in training her to be a therapy dog (hence the CGC test), has anyone used their GSP for a therapy dog? If so how well did they work out as a therapy dog?

We live in St. Louis MO, we have a small fenced yard and she usually gets about an hour of walking/running excersizing and she retrives fairly well. She will listen to a few commands but we are pretty sure she suffers from "selective hearing" especially when there is a rabbit or squirell. My wife uses a pinch collar right now to walk her and I usually use a shock collar but the CGC test required just a buckle collar.

Any advice would be appreciated, thanks.

Any dog can pass a CGC with the proper obedience training.  I would strongly suggest you and your dog get into a good obedience class first.  The CGC is a great start, but you will need more than that for therapy work.  Check out Delta Society for Therapy Dog requirements and testing.  All the organizations for therapy dogs have very similar tests.  Although I have no problems with either the pinch collar or the ecollar, they are not allowed for either obedience or therapy dog work. So, you will have to have a dog trained that will work without either of them. That is very doable, it just takes time and consistency in your training. Both my girls are obedience trained and show in obedience.  One is 4.5 and the other is 3 years old.  I am getting ready to have the 4.5 year old certified as a therapy dog and have no doubts that she will qualify. I would not however have my 3 year old tested yet as she still sometimes gets a wild hair and is unpredictable.  That won't work for therapy dogs.  Solid, steady and predictable are all good descriptors for therapy work. I would focus on obedience training and getting your dog into lots of different environments around allot of different people and situations as that will help you towards your therapy dog goals.  I would also not expect your dog to be ready for therapy dog work until he is at least 2 years old, but realisticall probably a bit older (say 3 or even 4 years old).  Good luck.  Therapy dog work is rewarding for both you and the dog and a great goal to work towards.  If you get into obedience training, be sure and tell them your have a goal of therapy dog work as they will then be able to give you additional advice on things to train for to help you acheive your goal.z

I am in the process of training our 8 m/o for the CGC, we are also working on him to train him as a therapy dog. We have a strong therapy group here, Tasha (my shih-tzu) is testing for therapy this weekend, she will be doing her first stint as a Therapy dog on Sunday and Tuesday. For therapy work the dog has to respond well to other dogs, strange humans, walk on a loose leash (this means that you have the leash hooked up and he heels or follows without you holding the leash) , the dog has to be well groomed and be able to be calm in a strange situation.
I have recently joined our local Kennel club, and the crew I am working with is really excited about Wachter (my GSP) getting to the point that we can test him for therapy, but he has to be at least a year old. He will be targeted to work at the kid functions until he is a bit older and calmer, then we will see about him doing the nursing homes. Actually from what I am learning from others on this group, GSP's are normally not calm enough to qualify for full therapy status until they are about 4 years.
If you are training him to be a therapy or assistant dog, there are "in training" capes that the dog can wear while you are out in public. The capes give the dogs just a bit more attention so you can work more with your dog in an area with distractions.

The AKC therapy test guidelines can be found at:  http://www.tdi-dog.org/tditesting.html

another accepted therapy test is: http://www.golden-dogs.org/test.cfm

I hope this helps