This first volume of a study of former Texas high school students who left as graduates or dropouts during the school years 1963-64 and 1968-69 presents a profile of the respondents and summarizes their opinions of their high school experiences. A sample of the State's 89 school districts was contacted by mail or interview, with 5,063 respondents in the 12,649 sample. Details of the sampling procedures and of the respondent profile are given. Respondents from both school years gave their highest approval to courses in which practical skills were taught. Slightly more than 30 percent reported that their opinions had changed concerning the value of courses they had taken in high school. Highest favorable opinion changes were toward bookkeeping, typing/shorthand, vocational industrial education, vocational office/business, and vocational homemaking. An overall favorable endorsement of teachers was given, although some serious criticisms were made. Much of this volume consists of the respondents' comments on the classroom environment, curriculum, skills, vocational training, and teachers. Related documents are available in this issue as VT 021 091, VT 021 093, and VT 021 094. (MF)