The manual of classroom observation techniques is intended to provide observers with detailed descriptions of standardized procedures and techniques involved in sequential data collection in a classroom. Focus is on obtaining reliable data on sequential interactions between teachers, peers, and subjects (each of the students in turn is a subject). The coding procedure described identifies behaviors of teachers and peers preceding and following the subject's behavior. Guidelines are given concerning proper equipment function, maintenance of good relations with school personnel, and timing within observations. The observer's actions before, during, and after an observation are specified. How to fill in the coding sheet is explained in detail, as is the proper sequence of coding behaviors. Definitions of the abbreviated observation codes used to describe peer antecedent behaviors, teacher antecedent behaviors, subject responses, and peer/teacher consequences are given. Included is a descriptive version of class activity during a reading period, with completed coding sheets. Finally, procedures are outlined for checking the reliability of observational data. (KW)