A child's development is unique and complex. Although children develop through a generally predictable sequence of steps and milestones, they may not proceed through these steps in the same way or at the same time. A child's development is greatly influenced by factors in his or her environment and the experiences he or she has.

The information provided by this tool is considered by experts as a representation of "widely-held expectations" for what an average child might achieve within a given year. Please consider this in the context of your child's unique development.