The American high school is a growing institution, and now includes more than 19,000 public high schools; 2,500 private high schools and academies; and more than 300 preparatory departments of universities and colleges. To a large majority of secondary students, the modern high school is their final school; to others it is a preparatory school, an intermediate step between the elementary school and college. Of every 1,000 students enrolled in the first five grades of the elementary school, 342 enter high school, 139 graduate high school, and 72 go on to college; those attending normal schools, teachers colleges, and other institutions of higher education may be added to that last number. For these 72, the list of accredited high schools becomes a necessity. For those who complete high school and do not enter college, as well as those who drop out before graduation from high school, a well-selected high school becomes a matter of vital importance. This bulletin, similar in arrangement, content, and design to those published in 1913, 1915, 1916, and 1922, is intended to meet the needs not only of such students, but of officers charged with the control of secondary schools and higher institutions, and State examining and certifying boards as well. It defines "accredited secondary school" and "unit," shows the variations in requirements of accrediting agencies, and describes methods of accrediting. Included in the divisions of the bulletin are two parts: (1) State lists of schools accredited by State universities and State officers of education, and (2) Lists of the four principal associations which undertake to accredit schools. (Individual sections contain footnotes.) [Best copy available has been provided.]