This manuscript was written by Grayson N. Kefauver, a part-time specialist, and Victor H. Noll and C. Elwood Drake, full-time specialists engaged on the National Survey of Secondary Education. It deals with pupils who attended the part-time continuation school's four or more hours a week and also with those who attended evening high schools. It was found that as a group, pupils who attended the continuation schools are slightly lower in intelligence and slightly older in chronological age than are those in the full-time high school. Because they come from a lower socio-economic group, the reason for leaving the full-time school was frequently the necessity for earning a living for themselves or for their relatives. In general, the enrollment in these continuation schools seems to have reached its peak about 1928 and to have declined somewhat after that time. This monograph contains the following chapters: (1) General acceptance of part-time secondary education; (2) The prevalence and programs of continuation schools; (3) Characteristics of pupils enrolled in continuation schools; (4) Prevalence and programs of evening schools; (5) Characteristics of pupils enrolled in evening schools; and (6) Concluding comments on continuation and evening schools. Individual chapters contain footnotes. (Contains 6 figures and 39 tables.) [Best copy available has been provided.]