Malnutrition is a term used to indicate a general condition of less than normal physical and mental vigor. While the causes of malnutrition are many, incorrect or inadequate diet appears all too often as one of the causes. School feeding, which affords not only an opportunity, to supplement the home food supply but also to teach correct food habits, becomes a most valuable agency in combating the condition. This monograph is presented with a desire to aid communities in making school feeding a really effective social agency. In order to determine the true relationship between malnutrition and school feeding, we shall first consider briefly the problem of malnutrition and, second, the development and present status of school feeding both in New York City and other communities in relation to this issue. Topics discussed in this bulletin include: (1) Malnutrition; (2) Anthropometric Method of Diagnosis; (3) Grading of Nutritional Defects; (4) The Extent of Malnutrition; (5) Conflicting Data; (6) Data of Careful Observers; (7) Estimates in the United States; (8) Causes of Defective Nutrition; (9) Effects of Malnutrition; (10) Brief History of School Feeding; (11) The English Movement; (12) France; (13) Other European Countries; (14) United States; (15) The Practice of School Feeding; (16) Experience of Great Britain; (17) Experience of France is School Feeding; (18) America; (19) School Feeding as a Remedy for Defective Nutrition; (20) Other Methods of Attacking Defective Nutrition; (21) The Nutrition Class; (22) Teachers' College, Columbia University; (23) The Bureau of Educational Experiments; (24) The Role of School Feeding in the Malnutrition Program; (25) What Type of School Feeding is Most Effective; (26) The Educational Aspect; (27) To What Extent Ought the Lunch Service be Self Supporting; (28) The Provision of Free Meals; and (29) Public Control of School Feeding. Menus of meals served at various city schools throughout America are provided. A bibliography is also included. (Contains 3 charts.) [Best copy available has been provided.]