To obtain an overview of research in agricultural education since 1966, approximately 500 studies were reviewed under these topics: (1) Philosophy and Objectives, (2) Manpower Needs and Employment Opportunities, (3) Teacher Education, (4) Learning Processes and Teaching Methods, (5) Instructional Materials and Devices, (6) Curriculum Development, (7) Administration and Supervision, (8) Educational Programs, (9) Facilities and Equipment, (10) Student Personnel Services, and (11) Evaluation. Some conclusions and recommendations include: (1) The Level of sophistication in research is improving, (2) More research is being conducted by professionals, despite the fact that a majority of the research is undertaken by graduate students, (3) There has been a shift from production agriculture to programs of off-farm agricultural occupations, (4) Means for increasing the impact of vocational guidance services upon students is needed, (5) Trends in off-farm occupations need clarification so that courses and guidance information can be provided, and (6) A new philosophical basis for agricultural education, based on sound research techniques, should be developed. The earlier "Review and Synthesis," covering research prior to 1966, is available as ED 011 562. (SB)