In this sixth survey of educational television in the United States, 187 UHF-VHF educational television (ETV) stations, 27 ITFS (Instructional Television Fixed Service) systems, and 35 CCTV (closed circuit television) systems reported on their operating policies and on their programming during the week of March 9-15, 1970. The amount and kind of programming addressed to age-differentiated audiences was the primary focus of the survey. Some of the significant trends noted were an increase in the number of ETV stations on the air, an increase in the number of days per week these stations broadcast, and an increase in "public" programming (in contrast to instructional programming). Some of this shift to public programming was caused by the great impact of the "Sesame Street" series, which was so-classified. The rest of the shift was probably caused by the increased use of programs produced by such national organizations as the Corporation for Public Broadcasting and the National Educational Television (NET) network. The material gathered in the survey is presented in both expository and tabular form. Information is included about production patterns, program sources, audience levels, program subjects, and station ownership. A statistical profile of each ETV station is given. (JY)