My DS stated in September. Here are my observations:
I spent the first term checking his planner and making sure he did his homework and handed it in on the right day. He was very overwhelmed by the amount he got. After the first half term I said he had to take responsibility for sorting out his school bag each day and ensuring his homework was done. This has worked really well and he just gets on with it.
I watched beforehand what the other children used for school bags (adidas messenger bags) and school shoes (Kickers) and got him those, which he was pleased with. My problem is he has just started doing the big knot thing with his tie, which I think looks really silly, but all the kids do it (I did it when I was in high school, but have not told him that!!), this has caused a couple of uniform detentions, but it is between him and the school and I am not going to nag him about it anymore.
His friendships have completely changed and he now has a big group of mates, when he had a small group of best friends. It is hard keeping up with who he is close to, and of course I know nothing about their parents and families. I find that a bit sad.
Lastly, girls. He was never interested before and now he has had two girlfriends, one for two weeks and one for three days. It is all very innocent, but I think he is too young. It does feel like I am losing him a bit.
I hope this helps.