This study was designed to identify: (1) status of science teaching and science teachers' and principals' attitudes toward change in science curricula and school practices during the 1979/80 school year in 100 public secondary schools (grades 7-12) that participated in a previous study in 1970/71, and (2) changes that have occurred in science curricula and school practices in the selected schools from 1970/71 to 1979/80. The target population of 1979/80 consisted of public secondary schools (grades 7-12) which participated in 1970/71 and in which both the principal and the teacher(s) responded. Ten states were selected for the study because they met specific criteria. From each of the ten sampled states, ten secondary schools were selected randomly. Thus, the total number of the sampled schools was 100. Principals of each of the sampled schools were requested to participate in the study; three science teachers were randomly selected from each building. Results of the status study are described in the report. These data were also compared to the 1970-71 study. Recommendations for future research and policy are included. (Author)