More from the William Stixrud and Ned Johnson book, The Self-Driven Child.

"What was once advanced work for a given grade level is now considered the norm, and children who struggle to keep up or just aren’t ready yet are considered deficient. Kids feel frustrated and embarrassed, and experience a low sense of control if they’re not ready to learn what they’re being taught.

"The fact is that while school has changed, children haven’t. Today’s 5-year-olds are no more fundamentally advanced than their peers were in 1925, when we started measuring such things. A child today can draw a square at the same age as a child living in 1925 (4 and a half), or a triangle (5 and a half), or remember how many pennies he has counted (up to 20 by age 6)."

Great reminders of what a robust developmental curriculum should be thinking about. Read them here.