How Schools Damage Children's Backs
I can't recommend this video enough -- it's a must-see.
Every step in the process is shown using furniture, demonstrations, photographs, and skeletal models by Richard Brennan.
Richard, an Alexander Technique teacher from Ireland, is looking a bit porky and could probably do with a Primal diet, but he knows what he knows and he knows about human movement and posture.
This will be particularly worth a look for parents. Basically, look what schools, through ignorance, do to your child who, in most cases, starts life with fairly good "use" of himself or herself.