Scores of millions of dollars are spent annually in the United States for new school buildings. With this large. expenditure has come a general desire that schoolhouses shall be usable, healthful, comfortable, and beautiful. Educators and architects have united in devising plans for school buildings. This bureau has published a valuable bulletin on "American School Architecture" and has two more in an advanced stage of preparation. Its specialist in school hygiene and sanitation, Dr. Frederick B. Dresslar, devotes much of his time in advising school officials about school buildings. It becomes ever more evident, however, that there can be no certainty that all or most schoolhouses in any State will be properly constructed in the absence of adequate building laws, and school officials and legislators everywhere are seeking information as to the best forms of such laws. Of course these must vary from section to section. The building best suited to one climate, environment, or kind of school may not be best for another climate, environment, or kind of school; yet certain general principles, and certain methods of applying them, must be common to all sections, all environments, and all types of schools. A building code carefully worked out for one State can contain much of value for all States. The sanitary schoolhouse law of Indiana, the rules and regulations of the Indiana State Board of Health governing the construction and sanitation of school buildings and school sites, and the building code of the State of Ohio, brought together in the accompanying manuscript, appear to be typical of the best practices. (Contains 2 tables and 1 footnote.) [Best copy available has been provided.]