Based on the examples of Susan Gross (.pdf) and Bryce Hedstrom (.pdf), I have created a guide for observing foreign language classrooms.
Since so many observation guides are state- or district-mandated, they often lack relevancy for foreign language classrooms. Furthermore, I have made this guide to be applicable to the method of comprehensible input (CI) and Teaching Proficiency through Reading and Storytelling (TPRS). It can be used to supplement any required observation documents.
Next year I will stick a folder to the bulletin board next to the door to my room with a stack of these inside. When an observer comes in they can take a guide and get to work.
Download the .pdf files here.