Good point, Lumberman. I guess it’s a case if “ be careful what you ask for, because you just might get it”.

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My first priorities are to quickly skim the lesson plans, sketch a quick seating chart (I only sub elementary), see if there are any special needs of any kind, and make sure I know the routes/procedures for the emergency drills. ETA: if I see a sub binder, I look for a seating chart, since that shaves off a few precious minutes for me.
My feeling is that I do the best I can with trying to take in all the info, but I’m only human and have limited time before the students arrive. I do like flipping through the entire binder during planning period though.