The traditional secondary school limited its instruction to full time pupils. Rather than adapt the kind and amount of work to the necessities of the pupil who cannot attend full time, it apparently preferred to have him leave school altogether. While frowning upon an elective system within the school, it felt no qualms in allowing the great elective--no attendance or full attendance. The modern secondary school aims to get all pupils of high-school age all the instruction that they can be induced to secure. Society itself is demanding that no pupil of high-school age shall be without instruction. As such, the Commission on the Reorganization of Secondary Education presents in this report various types of part-time education, including continuation classes, indicates some of the administrative features desirable, and provides a summary of recommendations. This report is based largely upon a helpful analysis made in 1918 for the High School Masters Club of Massachusetts by a committee consisting of several high-school principals. The following are appended: (1) Types of Part-Time Education Recognized by Federal Act; and (2) Summary of Laws in the 19 States That Require Continuation Education. (Contains 3 footnotes.) [Best copy available has been provided.]