A system was developed for analyzing the content of students' narrative reports of critical/significant events that occurred during experiences in two introductory teacher education courses at Ohio State University. This content analysis system is a hierarchical classification in which each event is classified in four ways: (l) type of experience (i.e., instructional strategy in which the event occurred); (2) type of event (i.e., teacher responsibility or area of teacher decision making); (3) category of event (i.e., specific situation or behavior during an event); and (4) affect of event (i.e., feeling expressed about the event). This report details the major processes involved in developing the system: (l) development of an initial set of categories based on students' reports of events; (2) trial analysis of critical event reports using the initial categories and subsequent revision of the category system; (3) development of rater skill and determination of interrater reliability; (4) establishment of procedures to be used in classifying events; and (5) content analysis of a large sample of critical events. Results obtained from implementation of the evaluation system are also reported. Tables present data obtained on each category of critical events. (JD)