This study examined the extent to which the size of school enrollment affects teacher control over discipline. The study was limited to high schools in Texas. Fifty high schools were randomly selected from each of five size classifications. A random sample of 750 Texas public high school teachers were selected for the study (150 from each category). Each of the 750 teachers was mailed a 41-item Linkert type survey instrument which was designed to reveal the degree to which they felt a loss of control over matters of student discipline. Responses were returned from 386 teachers. The study revealed that the size of school enrollment does not affect the teacher's perceived control over matters of student discipline; that is, there were no statistically significant differences among those teachers from each of the five high school classification categories. Analysis of the data further revealed no significant differences when considering the specific variables of teacher age, sex, teaching experience, and subject taught. (The survey instrument is included.) (RC)