Twenty-six children, clients of the Jewish Board of Guardians, were retested at least one year after the original Rorschach had been performed. At the time of the first Rorschach there was 61.5% agreement with the psychiatric diagnoses. At the time of the second Rorschach, over a year later, agreement was 88.5%. In all instances of change of diagnosis, it was the psychiatric diagnosis that was changed rather than the psychological finding. A critical point of differential diagnosis was the ability of the individual to form object relationships. Case illustrations reveal the use of Rorschach retests as an index of therapeutic progress in a child guidance clinic.