We need to be able to take account of our social stock as we go along.

To do this the home must be supplemented specifically and adequately by the school.

In the school we have opportunity of wide study of varying types, of comparison of differing rates of progress, of getting at actual knowledge of actual quality and capacity in a child as related to the like in other children.

This investigative function of the school has been used for the most part to ascertain what children were defective.

This is useful.