Dear Supply Teacher,
Thank you for taking my class during my 2 week absence and ensuring their safety while in your care. I didn't want to be away for so long, but it was unavoidable. I trust you enjoyed yourself; they're a vibrant bunch. However, don't be fooled; they couldn't wait to grass you up. My children are devious, mastermind-sleuths, who are not to be trusted. Their smiles are angelic, their eyes burn bright, but behind the mask is a fickle being, perfectly capable of lulling you into a full sense of security.
Here's how I know:
I can understand why there would be cause for "interpretation" when following routines you don't know and teaching from a plan you didn't write. In all honesty, the only person who understands the plan is me! It must be daunting to enter a new school and be expected to lead the day with a group of strangers (although if you'd arrived before 9am every day you might stand a better chance - yes, I know about that too; they were fascinated by the briefcase they watched you walk in with everyday!) For these reasons, you were more than welcome to ignore the "Outline of Lesson" box, and just focus on the "Learning Objective"; that is, after all, what I need them to learn. I could even understand you disregarding the work and resources I had prepared for you because we all know every teacher has their own style.
All children might give a bit of attitude sometimes, and push the boundaries with their behaviour, they do it for us all; but they are loyal. And although my class and I irritate each other (I'm too fussy and they're too loud), don't ever forget that we have each other's backs. We laugh together, help each other, and learn along the way.
Thank you so much for looking after them; you did a great job to keep them safe.