"This book has been written for the rank and file of teachers, school supervisors, and normal-school students. Its purpose is to illustrate the large individual differences in original endowment which exist among school children and to show the practical bearing of these differences upon the everyday problems of classroom management and school administration. It does not treat, except incidentally, the psychological principles underlying intelligence tests. Some of these problems the writer has touched upon elsewhere. The technique of giving the tests of the revised Binet scale and the general significance of mental tests for education have been set forth in some detail in another volume of this series, The Measurement of Intelligence, which should be read in connection with the present volume. The writer's present aim is the more practical one of showing how the results of mental tests may be put to everyday use in the grade classification and in the educational guidance of school children"--Preface. (PsycINFO Database Record (c) 2005 APA, all rights reserved).