Most puppies have to eliminate about every 30-45 minutes except, of course, when sleeping. Their elimination schedule will depend upon when they last ate or drank water; rambunctious physical activity; and the big unknown - personal preference! That's right - every pup has their own inherent elimination schedule. The good news is, puppies sleep alot!
It typically takes 4-6 months for a puppy to be fully house trained, but some puppies may take up to a year. Size can be a predictor. For instance, smaller breeds have smaller bladders and higher metabolisms and require more frequent trips outside. Your puppy's previous living conditions are another predictor. You may find that you need to help your puppy break old habits in order to establish more desirable ones.
If pup is peeing in the wrong place... you may be able to stop him. Move quickly towards him when he begins to pee and pick him up. Urgency is key here - you want to startle the pup just a little as you move towards them to pick them up, but you DO NOT want to scare the pup. You are redirecting your puppy to the right spot - not disciplining him. Immediately after picking him up, take him to the potty area and patiently wait. Most pups will finish there. Reward your pup with exuberance!
A training class is not there to train your dog. Its purpose is to teach you to train your dog so you will need to be committed to train your dog for short sessions (5 minutes) several times a day rather than just simply turn up for classes! This little bit of training everyday will be repaid with a lifetime of living with a well behaved dog. You will also learn to avoid problems before they begin as well as receive help to overcome any that you already have with your dog.