How old are the puppies now? Most assistance dog organizations (service, hearing, guide dogs, etc.) who take breeder donations want the dogs around 8 weeks old... not much older than that. Obviously it takes a tremendous amount of socialization to raise an assistance dog, and they want the most time they can have to do that. I don't know how old the puppies are we're talking about here, but just know that there probably is a time limit.
I could PM you the names of a few organizations I know who take breeder donations if you want them. Yes, health testing is extremely important, but probably more important is the temperment of the parents. Very few dogs have the correct temperment to be an assistance dog, and even then not every assistance dog could be a hearing dog, or a service dog, or a guide dog, etc.
The organization I work for gets all of our dogs from shelters. We go through extensive shelter evaluations to find a dog to pull from the shelter and bring into our program - usually we walk past about 300-500 dogs before finding 1 to bring back. Even then, about 40-50% of the dogs we get from shelters will not make it in our program, and we adopt them out ourselves (the shelters classify us as a rescue group). I don't know anything at all about your dogs, and I don't mean to sound terribly negative, but just so you know, not a whole lot of dogs can be assistance dogs. Good luck!