Labrador Retriever or Golden Retriever:  are usually great with kids and pretty smart, but they can be very hyperactive if they do not get enough exercise.

Poodle: Believe it or not, the Poodle is extremely smart and has a great temperament. Plus, you have a size choice – toy, miniature, or standard. Regular grooming is necessary.

Bichon Frise: This little cotton-balls breed loves to play, but is not usually too hyper. It is also a small dog, which is perfect for your little humans. Regular grooming is necessary.

Beagle: These dogs are friendly, clever and not too big, making them very suitable for kids. Though some can be a bit high-strung, they typically respond very well to training.

Cairn Terrier: These active little dogs seem to have a natural affinity for kids. They can keep up with them and tolerate just about anything, but are still gentle.

Collie and Shetland Sheepdog: These are both very calm, gentle and tolerant breeds that often do well with children of all ages and sizes - kind of like Lassie.

German Shepherd Dog: This breed is extremely loyal and protective, but MUST be well-trained. The GSD does have a playful side, especially at younger ages.

Mixed-breed dogs: Mutts are typically well-balanced and intelligent. Overall, they are truly amazing dogs! Plus, you can save a dog from life in a shelter.

This info came from:  http://dogs.about.com/od/dogbreeds/qt/dogsforkids.htm