Secondary education continues to grow and expand while the number of high-school graduates increases from year to year. The percentage of graduates who continue on to a higher institution is also on the rise. Thus, a list of those secondary schools that do a standard quantity and quality of work is imperative for those who wish to apply for admission. The work of inspecting and of approving these secondary schools is done by the agents of State departments of education, by representatives of State universities, and by certain regional accrediting associations. Any revised list is accurate and complete only at the time it is compiled because new high schools are being organized at the rate of two each day, and the work of approving these schools is never finished. Included in this bulletin: (1) Accredited secondary school defined; (2) Unit defined; (3) Variations in requirements of accrediting agencies; (4) Methods of accrediting; (5) State lists; (6) Lists of schools accredited by various associations. (Contains 9 footnotes.) [Best copy available has been provided.]