This bulletin discusses secondary education in the United States from the years 1916-1918. The following contents are included: (1) Character of school reports; (2) Growth of high schools; (3) The small high school; (4) Consolidation and coordination; (5) Larger use of the school plant; (6) The high schools and the colleges; (7) Failures and marks; (8) Retardation, attendance, and elimination; (9) High school pupils, (10) High schools for Negroes; (11) Secondary school teachers and principals; (12) The tenure of teachers and principals; (13) The training of teachers and principals; (14) Supervision of instruction; (15) Extension of function of high schools; (16) The war and secondary schools; (17) Farm service by high school pupils; (18) Military training in high schools; and (19) The future of the high school. [Best copy available has been provided.]