This is a report on the failure of the desegregation plan adopted by the Louisville Board of Education in 1956 but never modified to meet changing conditions. The analysis, by staff members of the Kentucky Commission on Human Rights, is based on statistical data supplied by the Board of Education for the years 1955 through 1971. Findings include the following. Racial isolation of students in Louisville public schools reached a ten-year high in 1971-72 school year, and the racial isolation of elementary school students is higher than at any time since total segregation was abolished in 1956. Schools with the greatest concentrations of white students are losing some of the few black teachers that were added to their faculties between 1968 and 1970. The number of black teachers south of Eastern and Algonquin parkways dropped from 8.6 percent in 1970 to 7.5 percent in 1971, while the overall percentage of black teachers increased to 31 percent. Out of all white high school students, 96.7 percent attend the four high schools, where at least 85 percent of the teachers also are white. The rapid shift to resegregation in Louisville counters the trend in the nation and the south. (Author/JM)