FIVE EDUCATIONAL PROGRAMS WERE CONDUCTED DURING THE FALL AND WINTER OF 1965-66 AT AREA EXTENSION CENTERS ESTABLISHED BY THE OHIO COOPERATIVE EXTENSION SERVICE IN JANUARY 1965. AIMING MAINLY AT THE COMMERCIAL AGRICULTURAL INDUSTRY, SPECIALIZED EXTENSION AGENTS FOCUSED ON EDUCATIONAL PROBLEMS OF AGRICULTURAL PRODUCTION AND OF SUCH AGRIBUSINESS CONCERNS AS MARKETING. SEQUENTIAL LEARNING EXPERIENCES WERE DESIGNED TO INCREASE UNDERSTANDING OF PRINCIPLES AND THEIR APPLICATION. THE INVESTIGATION SOUGHT TO DETERMINE THE ACHIEVEMENT OF STATED EDUCATIONAL OBJECTIVES, IDENTIFY SELECTED PARTICIPANT CHARACTERISTICS (AGE, OCCUPATION, SIZE OF FARM, SIZE OF FARMING INCOME, EDUCATIONAL BACKGROUND AND EXPERIENCES, SOURCE OF CONTACT, AND REASONS FOR ENROLLMENT), AND ASSESS KNOWLEDGE AND UNDERSTANDING GAINED BY 376 PARTICIPANTS. PRETESTS AND POSTTESTS WERE GIVEN. THE "IN-DEPTH" SCHOOLS WERE JUDGED SUCCESSFUL, A DEEPER UNDERSTANDING OF CONCEPTS WAS ACHIEVED BY PARTICIPANTS, AND THE TARGET AUDIENCE WAS REACHED. THE DOCUMENT INCLUDES SEVEN TABLES. (LY)