Any child who isn't developing according to these charts, isn't on these timelines, probably needs government intervention and assistance . Never mind that the child is an individual, whose development may or may not meet the requirements of these charts, but who may be perfectly healthy and perfectly normal. They know far better than the state whether your child is developing normally and as an individual. Some children don't walk until they are a year old. This doesn't mean they are slow, it means they have their own timeline.
Some children walk when they are seven months old.
This doesn't mean they are exceptionally smart, it just means they have their own timeline. If you discern a note of sarcasm in this post, well you should. While parenting does not apparently come naturally to the esteemed co-chairpersons of the Governor's Commission on Early Learning, parenting does come naturally to most parents, if their confidence in their own ability to parent isn't undermined by government propaganda. Teachers could identify reasonable specifications for parents relative to the home learning environment and certify parents who will cooperate. Guardians and agencies would be included in the assurance of a well-prepared student to inquire, acquire, and require.