This study sought to describe how first-year teachers perceived ways in which they had changed during the school year. Subjects of the research were 13 first-year teachers at the elementary, junior and senior high school levels. Data were gathered during two structured, tape-recorded interviews: one between mid-March and mid-April, and the second at the close of the school year in June. These two interviews were the fourth and fifth respectively in a series of five such structured interviews which began before the first day of classes of the school year. Four topics were explored: (1) first year teachers' perceptions of changes in relationships with others in the work environment; (2) perceptions of changes in planning and organization for instruction, and in the instruction process itself; (3) perceptions of changes in ability to tolerate and respond to student misbehavior; and (4) perceptions of changes in ability to succeed as a teacher. Descriptions are given of the gradual changes of attitudes on these topics as expressed by the teachers over the period of their first teaching year. Their responses become more similar toward the end of the year, and reflected growing confidence in their ability to teach. (JD)