This report is another in the series being prepared on the numerous investigations comprising the U. S. Metric Study, by the U. S. National Bureau of Standards. This report concerns the effects of increasing worldwide use of the metric system on education in the United States. Its purpose is to present the educational advantages and disadvantages of both the metric and the customary systems of units; to determine the current usage of metric measurements in schools, and trends in that usage; to find the ways in which education would have to change as the U. S. accommodates to increased worldwide use of the metric system, under a planned national program or without such a program; and to estimate the costs of the changes; and to make recommendations for ways in which to take best advantage of the changes. It is concluded that the advantages of going metric in education are significant but not overwhelming. On the other hand, the costs are not prohibitive and can be met largely out of normal expenditures. A conversion period of 10 years seems to be close to the optimum, but national leadership and sense of purpose would be needed to completely benefit from metric conversion. (Author/TS)