The legislation summarized in this compilation was enacted in the two year period comprising the calendar years 1920 and 1921 and represents the educational enactments of regular legislative sessions of all the states, except Alabama whose legislature meets quadrennially and of several special or extraordinary sessions including one in Alabama. Massachusetts, Rhode Island, New York, New Jersey, South Carolina, and Georgia hold annual meetings of their legislative assemblies and their enactments therefore appear for both 1920 and 1921. The material presented here constitutes a third supplement to Bulletin, 1915 No. 47 "Digest of State Laws Relating to Public Education" earlier supplements having been published in 1918, and 1928. Laws of distinctly local application and ordinary appropriations such as are made from year to year are omitted except in a few cases where they seem of special interest. The purpose of these "digests" of school laws is twofold: (1) First to present for the use of persons wishing it an index of all general state educational legislation; and (2) to summarize the enactments of the period covered in such manner as to show their main provisions and purposes. A third possible value of the work is the "Trend" of school legislation which may be seen in it. The tendency to enact laws in the light of the best practice elsewhere and of the experience of other states with like legal provisions is more evident as each year passes. The style of this bulletin follows that of the digest of 1915 and the supplements of 1918, and 1920. A plan of classification embracing about 110 items is arranged and kindred enactments are grouped under the appropriate heading. It will be observed that the plan begins with general state administrative provisions and proceeds through the entire public school system. An index is provided. (Enacted in 1920 and 1921.)[Best copy available was provided.].