There are several instances throughout the year where I feel like other teachers have tried to pull a fast one on me regarding scheduling and procedure. My latest issue is the K and 1st grade teachers who can't EVER seem to get their kids to music on time. I'm not talking 5 minutes late. More like 15-20 minutes late. Then many times they will come to pick them up later than normal, knowing full well that I have a class right after theirs. My school is a middle school and elementary school mixed so I see both ages. Specials run off the middle school bell schedule (as should the elementary to some degree). It ticks me off that these teachers constantly pay no regard to the fact that while they may not be on a strict schedule, I am. I usually wait for 20-25 minutes. After that I feel justified in locking my door or running out to make copies or whatever else I need to do. I've already wasted energy in planning for a full class, setting up and then biting my fingernails wondering how the kids will act (the later they are, the worse they act.) It all makes me very anxious. Am I being a baby by letting this bother me? Am I justified in not taking the kids if they are more than 25 minutes (half the class) late? There's also been times where they don't show up at all due to a field trip and nobody will have bothered to inform me beforehand.