DS1 goes back into Yr 9 next week.
His biggest problem in the early days (apart from missing the bus home on day one!!) was the yr 10/11s being horrid to the new yr 7s, mainly at lunchtime. It was not a major problem, and the issue only lasted for a few days, so I'm guessing this is more likely to be the new Yr7s being new rather than the yr 10/11s being overly obnoxious iykwim?
He did have an issue in Yr7 with one teacher (who thankfully retired that year). I put it down to a personality clash, so didn't follow it up, but subsequently found that there were issues with this teacher (this discovered through a conversation with the Head of Year, not through hearsay). I also acknowledge that this was one teacher out of a hoarde of very good staff (ime/o).
My issue with secondary school is that I'm never sure when to follow stuff up, and when to let things lie. I was spoilt at the primary school because the staff are almost always accessible, whereas this is just not possible in secondary school, and you have to wait for the required person to ring you back (which they always do at my DS's school, although sometimes it can take a while, or seems to when you want to sort something out, lol). This is NOT a criticism of secondary school, just an observation.
General communication could be better, but given that my DS is fairly happy at the school, I can live with this.