Elementary and secondary school student teachers were tested before, during, and after their teaching experiences to determine if there were changes in their concerns about teaching. Three categories of concerns, each with eight items, were ranked: methods concerns, pertaining to instructional skills and content knowledge; cultural concerns, relating to the modification of personal habits and teaching procedures to meet the cultural needs of the school community; and personal concerns, meaning the satisfaction with professional and personal relationships in the context of the new role of teacher. It was found that both the elementary and the secondary groups shared the same concerns at about the same level each time they were tested. Concern with methods dominated the responses of both elementary and secondary school student teachers, increasing in number to the final test. Among the concerns which escalated after the student teaching experience for elementary school student teachers was maintaining school discipline. The secondary school student teachers reported an increase in concern with handling noninstructional tasks. (FG)