My district has mandated that all schools have a team of admin and "teacher leaders" to plan the direction of the school. Anyone can join, but per usual with any group, the same 6-8 people show up to meetings. I come to this group because I like to hear what's going on with the school community as a whole and try to get involved as best I can. One of our tasks is to do 5 minute walkthroughs of classrooms as a team, looking for evidence of whatever professional practice our school is focusing on. Up until now, these walks have been announced and by grade band. (6-8, etc.) The walkthrough group picks teachers from that band out of a hat and each person is assigned an observation role. It is NOT evaluative. We literally just report what we see anonymously. Admin also gives teachers feedback on the good things they're doing. Someone (Not me, really! :haha suggested we make these visits unannounced. Several walkthroughs have resulted in some teachers freaking out mid-lesson and suddenly "turning on" whatever practice we are focusing on. It's super clear who does these practices on a daily basis and who's just putting on a dog and pony show. It sometimes difficult to get accurate school-wide trends if people are faking what they do. The team is really divided on what to do. Some people feel like teachers should have time to "prepare." Some people feel like a true snapshot should be a true snapshot....(with respect that is IS a snapshot.) Would you be offended if a group of colleagues came in to your room unannounced if you knew what they were there for?