ANIMAL PLANET
Animal Planet's dog breed selection tool is simple to use (a drop down menu) and lists information on the breed's energy, exercise requirements, playfulness, affection lvel, friendliness toward dogs, other pets, strangers, ease of training, watchdog ability, protection ability, grooming, cold / heat tolerance. There is no ranking of a breed's temperament toward children.

EUKANUBA BREED INFORMATION
Eukanuba's site provides detailed information on on the characteristics of each breed, combined with a breed encyclopedia that lists those breeds that have been shown to be good with children.

IAMS BREED INFORMATION
The Iams web site offers a detailed selector tool. You input your needs and what you can offer a dog and the site offers up your matches as a percentage. This selector does list questions such as if the dog will be living with small children and if the dog would be living with other animals, even cats.  This systems appears to rank by percentage and even when I used the only criteria to be "around small children", 80% was the highest rank.

Collins, S.  Tailtalk: Understanding the Secret Language of Dogs. San Francisco: Chronicle Books, 2007
This is one great book for the kids.  Our 10-year-old enjoyed reading the book.  Great photos to keep the kids (and adults) interested.

Coren, S.  How Dogs Think: Understanding the Canine Mind. Toronto: Free Press, 2004.
A book that walks the reader through how dogs think.  Chapters on how dogs process information through their senses. Valueable to any dog owner.

Coren, S. The Intelligence of Dogs: Canine Consciousness and Capabilities. New York: Free Press, 1994.
A research that is most known for the listing of the most-to-least intelligent dog breeds.

Hart BL, Hart LA, Bain MJ. Canine and Feline Behavior Therapy.  2nd Edition.  Iowa: Blackwell Publishing, 2006.
There is also a syndrome called episodic or dysfunctional rage or idiopathic aggression.  This aggression is truly unpredictable. This type of aggression, which is very rare, is frequently confused with subtle dominance aggression. With idiopathic aggression, the dog will attack anything in its path, animate or inanimate.  The authors of Canine and Feline Behavior Therapy explain that there may be a genetic predisposition with this syndrome as the English Springer Spaniel as this breed appears to have a predisposition toward this syndrome

Hart BL, Hart LA.  The Perfect Puppy: How to Choose Your Dog by its Behaviour. New York: W.H. Freeman and Co, 1988
Some breeds are more likely to snap at children: Dalmatian, Cocker Spaniel, Chihuahua, Miniature Schnauzer, Lhasa Apso, and Pekingese

Hoffman, M.  Dogs: The Ultimate Care Guide: Good Health, Loving Care, Maximum Longevity. Rodale Press,1998
This also includes 115 solutions to tough behaviour problems.

Horwitz DF and NEILSON JC. Canine and Feline Behavior. Blackwell's Five-Minute Veterinary Consult Clinical Companion.  Iowa: Blackwell Publishing, 2007
A great resource that in total offers 64 chapters of insight into problem behaviour.  This book comes with a series of handouts in a CD.

Millan, C.  How to Raise the Perfect Dog: Through Puppyhood and Beyond. Harmony Books, 2009
Raising

Scott, JP and FULLER JL.  Genetics and the Social Behaviour of the Dog. Chicago: The University of Chicago Press, 1965
A standard.