Hi everyone, Looking for advice. I'm currently acting head of maths as my hod is on mat. leave. There is a teacher in my department who works really hard and I always thought he had it all sorted. Since taking on the hod role I'm starting to see a pattern emerge of him throwing out difficult students from his class. Last year, in the staffroom, he always gave perfectly justified reasons for doing this and I always thought fair enough. Now though, as hod, I've had students and their worried tutors coming to me to tell me their version of events which dont quite match his. I started the year by backing the teacher, as you would, then when it kept happening, I started asking him for witnesses. He would give me names of students, but none confirmed his version of events, they have all said something along the lines of "i didnt see/hear that, but maybe I wasn't looking when it happened". This has happened 3 times now and each time I have asked at least 4 students he suggested for their accounts, none confirmed. I had a major event today, where he said he threw a student out because they threatened to punch him in the face, again, I couldn't find a single witness and the student said it absolutely didnt happen (told him to **** off, so still serious, but no threat of violence). Anyway, the pattern I am seeing is: Always the same students No detentions or warnings seem to be given before throwing them out for chatting or not doing enough work, turns into an arguement. His version always seems to be similar in some repects to the students, they've always done something wrong, but i cant find witnesses for something serious in his statement He has said something personal to the student e.g. you're a nasty child, you're a spoilt brat... although he always denies this. I'm concerned that once I start investigating further (although, I'm really inexperience and not sure how to do this!) The rest of the dept. will think I dont have their backs, at the end of the day, these pupils have done something wrong, just maybe not what he is claiming. He is definitely the type to make it public knowledge that I'm not trusting his version of events and I dont really have the reputation yet where people know you have good reason. How would I even go about this? I don't really have enough free periods to just wander around, when I have done, the students in question have explicitly stated that "he's not usually like this, he's just being nice because you are here". I also wonder if maybe he has just had a series of unfortunate events because my actual hod did not mention this at all in the hand over notes.