I trained dogs for 10 years using all sorts of methods (even those shown in these shows), and this is not a good example for kids (or anyone) to be watching on how to train dogs! Cesar uses a lot of very hands-on techniques, jerking animals into submission (something small children should not try) with very little rewards, as well as a lot of flashy smoke and mirrors and borderline abuse techniques to get fast results for TV at the expense of the animal. By the end of every episode, the dogs are so afraid to do anything they "appear" to be trained! One episode shows him forcing a great dane onto slick floors to "get him over it", a method I'm sure most parents won't want their kids repeating on their dogs.
If you're looking for something to help your kids have the rewarding experience of training a dog, look into Dr. Ian Dunbar's books on dog training. His website now offers videos and a listing of accredited dog training classes. Leave Ceser Millan in the realm of trash Reality TV where he belongs and far away from your dogs!