I'm a bit peed of to put it mildly after a conversation I had with DD today, where she as wittering on about not liking supply teachers, as they've had a few where she feels they've behaved unfairly towards the class/individual DCs & how she hates it when her teachers are away, because they then get some awful teachers.
She starts off by telling me about todays ST treating the class yr5 class like year1 DCs, lining them up to leave class for lunch etc, cutting into a lot of their lunch time. Then taking away what amounted to nearly 2 weeks worth of a class award scheme for good behaviour - because of one incident where she clapped to get their attention to do something or other, no warning, just what does sound like a bit of an overreaction - but I chatted with DD about how difficult it must be to go into different schools/classes & not know the school or system properly & also hard to get a class to pay attention when some DCs will play up because she is new etc so hard as it is, maybe it's best just to look at it that way -
So I am not ST bashing in general, but I was pretty darn cross & now wondering what to do about it when DD followed that up by telling me about an incident with Fridays supply teacher - with hindsight DD was upset & very quiet on getting home on Friday, but didnt want to open up about it then. Turns out she was very upset because during a writing excersize, this teacher had looked at DDs work, complained DD hadn't written enough, DD apologised & explained she had a bad headache, so was struggling with concentrating & that her hand was acheing - the ST scolded her, telling her that's not an excuse & if you were in my class in London you would not be in the top set
.- not only belittling DD in front of other, but undermining her very experienced & fantastic teachers too 
According to every teacher DD has ever had, she is a model pupil, loves to learn, is very bright & cares very much about getting it right, so this upset her deeply - if that wasn't bad enough, DD is anxious by nature, is still in recovery from a neck injury, which adds to the headaches & has only recently been diagnosed with a medical condition that affects her joints, makes her vulnerable to injury & causes her pain, so not only does she get bad headaches, her hand can often genuinely be very painful if she writes for long, it also makes her sensitive to noise etc, all of which her usual teachers are aware of & deal with well - I have an appointment this week with the school nurse to start the ball rolling on help for her, but its a complicated condition, & we still have OT & Phsyio appointments to go before we know the full picture IYSWIM.
I am really angry about the STs comments to. DC she obviously knows nothing about - am I over reacting, putting DDs medical problem aside is this as bang out of order as I think it is & should I complain - gawd I would love the agency details right now
Advice & opinions appreciated please
TIA