Education is an open-end process. It can, and should be, lifelong, and schools should leave the door open to all who are eager to learn--adults as well as children and young people. Our public schools are meeting this community responsibility in more and more ways--among them the evening school, which pioneered in adult education and continues to be one of the most effective ways of extending over. A recent survey by the U. S. Office of Education reveals that approximately half of all public school districts in communities with populations of 2,500 or more have evening or adult schools. These evening schools function as elementary schools, high schools, vocational schools, junior colleges, and institutions of several other types. Their number is growing. No general report of the status of evening schools has been made since the National Survey of Secondary Education monograph on "Part Time Secondary Schools" was issued by the Office of Education in 1933. While there is still a need for an intensive evaluation study of the administrative, supervisory, instructional, and promotional practices in evening programs, this study of 100 representative evening schools in 36 States should help to reveal their progress and prospects, and provide some milestones for further development in meeting the Nation-wide opportunities and obligations of adult education. This bulletin addresses: (1) Scope and method of this study; (2) Programs of evening schools; (3) Schedule; (4) Administrative and instructional staffs; (5) Supervision; (6) Lay advisory committees; (7) Housing; (8) Finance; (9) Promotion methods; and (10) Conclusions. Appended are a list of schools studied, alphabetical by State, and a list of selected references with brief descriptions. (Contains 10 footnotes.) [Best copy available has been provided.]