This bibliography, containing 2,403 titles of research studies in education completed during the year ended June 30, 1928, continues Bulletin, 1928, No. 22, Bibliography of Research Studies in Education, 1926-1927. Letters were sent to various research agencies requesting information and publications for inclusion in the list. The responses to these requests, received from 303 institutions and organizations throughout the United States, furnished the material for the present volume. An examination of the titles included emphasizes the fact that there is no generally accepted definition of the term "educational research." Both published and unpublished studies are included. [Best copy available has been provided.]