If you aren't happy and the methods being used aren't what you think are positive methods and the class isn't at all fun then I would say, find a different trainer.
We did a really basic puppy class with a trainer then after a couple of months started with the bronze good citizen award, after searching for the right class for us I went throught the APDT website to find a suitable class. The class/club we now belong too we very welcoming and up front and gave lots of information. We were allowed to go along to the class speak with the trainer and watch a class
with Roxy before we committed. We were also given all of the KC good citizen leaflets to read too which explain what you learn in order to pass each test.
It was a big jump from puppy to bronze but we weren't pressurized to force our puppies/dogs to do tasks. everything was done at
thier own pace, using positive, reward based methods. We had 4 puppies and 3 older dogs in the class to begin with. So it wasn't/isn't a class purely for puppies.
I would say don't give up at all on the training even if it means you have to change trainers as we've found it extremely beneficial. All puppies and dogs learn at different paces too, but most of all it should be FUN.
I've just seen your other post, That's great that you are giving the class a second chance maybe you can have a quiet chat with the trainer before or after your next class and ask him to break things down for you. Don't be afraid to ask questions either after all you are paying them to help you and your littlun.
After that if it were me and you still aren't happy then i'd find another class hun.
Good luck though! xx