In early 1940s Hermann Henry Remmers, a Professor of Education and Psychology at Purdue University designed a poll to understand the attitudes of teenagers. It was the first time nearly all Americans teenagers attended high school. Dr. Remmers utilized sampling techniques to gather information from this subset of the population through their schools. Purdue Opinion polls began with respondents in Indiana, then expanded to five Midwestern states, and eventually covered the whole nation in 1945. Topics cover parents, education, television, civil liberties, communism, ethics, science, selective service, drugs, poverty, and the Middle East. Roper Center holds datasets from sixty Purdue Opinion Panel polls from 1949 to 1974.