This issue of "Educational Comment" is concerned with curriculum courses in pre- or in-service programs for teachers, considered from the perspective of the instructor of these courses, and with general problems of curriculum research and personnel. It contains seven papers originally presented at the Association for Supervision and Curriculum Development Conference in 1969: "Sources of Knowledge for the Curriculum Field,""The Concept of Valid Content,""The Curriculum Worker: A View of His Tasks and His Training,""Curriculum Problems Facing the Schools: Now and in the Future,""A Survey of Curriculum Courses and Content," and "Communicating Curriculum: An Analysis of Current Texts." (RT)