Observation and investigation prove that in the matter of their intellectual work these children are customarily wasting much time in the elementary schools. We know from measurements made over a three-year period that a child of 140 IQ can master all the mental work provided in the elementary school, as established, in half the time allowed him. Therefore, one-half the time which he spends at school could be utilized in doing something more than the curriculum calls for. A child of 170 IQ can do all the studies that are at present required of him, with top "marks," in about one-fourth the time he is compelled to spend at school. What, then, are these pupils doing in the ordinary school setup while the teacher teaches the other children who need the lessons? No exhaustive discussion of time-wasting can be undertaken here, except to say briefly that these exceptional pupils are running errands, idling, engaging in "busy work," or devising childish tasks of their own, such as learning to read backward--since they can already read forward very fluently. Many are the devices invented by busy teachers to "take up" the extra time of these rapid learners, but few of these devices have the appropriate character that can be built only on psychological insight into the nature and the needs of gifted children. Before education can discharge this most important task of all with economy and justice, it must become a science. The science which is fundamental to education is psychology. Psychology had to develop the methods of mental measurement before there could be accurate or humane dealing in a system of compulsory education. We must take "the measure of a man" before we can know how to educate him; and it remained for mental measurement to reveal the astonishing power of learning that is latent in an elementary school-child of IQ 170 or 180. How shall such pupils be taught? How shall we educate these rapid learners, these subtle thinkers, these children of potential genius in the elementary school? CONSIDERATIONS IN PLANNING THE CURRICULUM [3] At the outset we must realize and admit that no absolute criteria exist by which to select from all aspects of human experience those which are most valuable for a group of gifted children. There is no body of "revealed" wisdom about this matter. Nevertheless, we are not altogether at sea. Common sense, accompanied by scientific facts of psychology, comes to our assistance, and we may note first such negative considerations as occur to us under this guidance. It is useless to undertake extensive work in classical languages or in mathematics as "general discipline" for the minds of these rapid learners. The education given should be such as will function specifically and uniquely in their lives. It should afford them a rich background of ideas, in terms of which they may _perceive the significant features of their own times_.