Riverside and San Bernardino Counties constitute Region 7 of the California Migrant Education Program. Using data from the Migrant Student Record Transfer System, a study was conducted to examine movement patterns of migrant students in 1977. Intrastate (and intraregional) movement dominated the flow picture for the region, as well as for the state. During 1977, 174 migrant students entered Region 7 schools from another state and 1,113 students entered from within the state. Leaving the region for another state were 157 students, and 1,104 students departed for somewhere else in the region or state. The main receiving regions were Regions 8, 3 and 1. Grade level breakdowns indicated there were 1,073 intrastate students entering grades K-6 and 1,055 departing, 35 entering grades 7-8 and 35 departing, and 7 entering in grades 9-12 and 14 departing. Over 3,000 migrant students showed no movement at all during the year. There was a 37% increase in the number of nonmobile students identified in 1976 as compared with 1975, but between 1976 and 1977 the group increased by less than 1%. The statewide trend over the three years was an increase of 88% to 92% of intrastate movement within a region. Data indicated that the problem for administrators, therefore, lies not so much in record transfers but rather in helping students catch up on studies lost due to a move. This document includes tabular data reflecting state, regional and county breakdowns on destinations, origins, numbers, and grade levels. (DS)