This study describes the reassignments of regularly assigned classroom teachers in the Chicago Public Schools from 1980 to 1983, focusing on those schools with the highest number of transfers of regular teachers to other schools or assignments. In 16 high schools, the turnover was primarily due to declining enrollment, whereas in 12 schools, enrollment and faculty size did not vary significantly, but each had a high level of turnover during at least one of the years studied. The four schools with high turnover all three years (Austin, South Shore, Robeson, and Phillips) are examined more closely. Finally 21 school--comprising 7 small or specialized schools, 6 vocational/trade schools, and 8 academic schools--had consistently low numbers of transfers each year. A majority of the elementary schools experienced minimal turnover, the highest occurring in 1981-82, when 20 schools were closed and a number of new programs were introduced due to a desegregation plan. Forty-nine schools experienced 10 or more transfers in at least one year, of which 12 schools closed annd 10 experienced sharp declines in enrollment and consequent reductions in force. Eleven schools had enrollment declines of more than 100 students but other factors were also involved, and in 9 schools new programs were introduced. The final section describes the management of transfers of regular teachers. The study found that the number of transfers made after the beginning of the school year was steadily reduced, but still involved 46 percent of all transfers in 1982-83, disrupting the classrooms of nearly 48,000 students at least once during that year. The panel estimates the costs resulting from diversion of classroom time for acclimation of the transferred teachers to be as high as $441,000 in 1980-81, but the figure was reduced to $195,000 in 1982-83. Appended are extensive tables and charts showing transfers for every school in the district over the three years. (TE)