This report presents a detailed picture of trends in the segregation of Hispanic children in American urban public schools from 1970 to 1974. A companion volume reports on trends in black school segregation from 1970 to 1974. This volume shows both the broad regional and national trends of segregation of the nation's second largest minority group, and also a detailed year-by-year portrait of developments within many of the biggest school system. The regional reports on Hispanic children are more complete for the northeast and the south than they are for the students in the midwest and west. They are not usable for the border states where there are few students and very poor coverage. The statistics in this book show very wide variation in levels of segregation between school districts. Although there has been little conscious effort to desegregate Hispanic students there is usually relatively little segregation where they are present in small numbers. The statistics also show a very rapid growth in the number of Hispanic urban school systems, and also, an increase in the intensity of their segregation during the period of this report. (Author/AM)