Jeff Smith: “90% of brain development occurs between birth and 5 years…”

“They always refer to them as teachers. And one of the reasons for that, not only because they are expected to be trained for what they do, but 90% of brain development occurs between birth and 5 years old. They are transitioning them or moving them along to be prepared for school and for the next stages of life.” (17:21–17:26)

This is an excerpt from a raw transcript. The assertions have not been audited or verified. Tap the video to view the source footage and understand the context.