The Profile of Interaction in the Classroom (PIC) is a short-cut method of interaction analysis that can provide the quick feedback essential to effective supervision of instruction. And because the PIC contains a record of all the behaviors that occurred in the classroom, as well as the sequence, the data may be used to build a traditional matrix. The PIC employs the ten categories and the 3-second rhythm of the Flanders System, but instead of using numbers, the PIC uses a tally mark for all ten behavior categories. The tallies are recorded in ten columns, each of which is divided into 40 one-minute rows. The rows are divided into 20 sections, each representing 3 seconds. Thus a behavior can be recorded in the appropriate numbered column and in a position within a row which shows its place in the sequence of events. The primary advantage of the PIC over the traditional method is that it presents the data in an easier form for calculating the totals of different categories of behavior and the ratio of indirect to direct or student to teacher behavior. (Related to SP 003 937, in this issue.) (RT)