The present study aimed at examining the effects of class rearrangement of host classes on peer relationship of transferred children, and the validity of the use of the psychological distance map (PDM) for assessing the interpersonal psychological distances among elementary school children. Subjects were 40 third- to sixth-grade children and their classmates. Assessments were made four times over a three-month period after transference in April by the PDM. Psychological distances on the PDM in the two sampled classes significantly correlated each with choice in the sociometric test, frequencies in interaction observed during free play time, and the order on the rating scales for intimacy. Transferred children in fifth-and sixth-grade non-rearranged classes had lower status indexes assessed by PDM than host members in April.No such differences were found in rearranged fifth- and sixth-grade classes and in all third-and fourth-grade classes. Effects of class rearrangement on peer relationship of transferred children were discussed from a developmental point of view.