This document provides guidance on how to introduce peer lesson observations to teacher trainees. It recommends training peer observers by focusing on specific criteria for reliable and valid observations. This training can be done through meetings, videos, or manuals. Potential observation tasks are outlined, such as pre-observation meetings, class topics, teaching strategies, and assessment tools. Qualities of effective teaching are also listed, like beginning class promptly, treating students with respect, providing clear explanations, engaging students, using examples, and reflecting on one's own teaching. Sample notes for a pre-observation meeting are provided covering class description, goals, objectives, strategies, assessments, instructor concerns, and post-observation details.