I remember a story called "Growing up" by Joyce Carry, if you have read it. It speaks of a father returning back to his family from work. Robert Quick, in his 50's, realizes that growing up is a phase that not only his teenage daughters have to go through, but also himself.
Growing is not a phase of life, rather it is the whole life itself. When a baby is born, it learns to cry, to smile, to know its surroundings, to walk, to eat and many things. When they become toddlers, we send them to school, so that we can teach them how to lead life, like coping various emotional, social, educational and philosophical variations of life. It's very wrong for nowadays parents to interpret schooling is only education. It is education yes, but about life.