During the calendar year September 1977 to August 1978 there were over 10,000 Arizona migrant students listed in the Migrant Student Record Transfer System (MSRTS). Because agriculture was a year round activity within the state, students tended to remain for relatively long periods of time. Forty-four percent of the students moved only one time during the year and 31% indicated no movement at all. An analysis of the MSRTS records showed that 1,349 students entered Arizona from 31 states. Almost 80% were from California, Colorado, Oregon, Texas and Idaho and 58% were from 17 counties. Over 81% of the entering students were in grades K through 6. Fifty percent of the 781 students departing the state left during May and June. Significant differences in destinations existed depending on the student's county of origin in Arizona. Most students leaving Maricopa county went to Texas, and 69.6% of those leaving Yuma county went to California. Four counties in California, Colorado, and Oregon received 26% of all the migrant students departing Arizona. Identification of home base states, counties providing significant numbers of incoming students and areas receiving large numbers of students would serve to allow closer coordination of educational, health, and other social programs. (DS)