The effect of failing to care for these children in accordance with their needs.

[philobiblius]

"A fourteen-year-old boy was recently examined. He had been expelled from one school and was in great danger of having the same experience at another. When examined it was found that his intelligence was three years ahead of his age; and during all his school life he had been in grades and had been given work that was far too easy for him, so that he developed a contempt for the work assigned and incidentally for the teachers and school authorities who assigned it. This is likely to be the effect of failing to care for these children in accordance with their needs."
~H. H. Goddard, 1924 (in The Child, His Nature and His Needs)