This teacher evaluation checklist with accompanying manual was designed for use in Hartford, Connecticut, public schools to provide a means of teacher self-evaluation and to provide principals and other designated administrators criteria for objective observations and comment on the quality of teaching activity. (The "Instrument for the Improvement of Instruction" is a refinement of a similar document developed by the Cupertino California School System in collaboration with San Jose State College.) The instrument itself consists of 1) a descriptive discussion of teacher performance in each of eleven behavior areas (e.g., effective use of resources, instructional planning, teacher-pupil planning, classroom management, mastery of subject, teaching for democratic values and attitudes, provision for student participation) designed as criteria for using the scale; 2) the 11 corresponding five-item scales (the one item to be selected from each scale which best describes the teacher's performance in that area) and 3) forms for the instrument: "Observation Guide" for use by observers when taking notes in a classroom, "Profile" for permanent recording of the evaluation results, and "Interview Guide" for evaluation of non-classroom activities. The accompanying manual contains description of instrument materials and their use, discussion of the use of evaluation results, and the annual calendar and procedures for evaluating non-tenure and tenure teachers. (JS)