DS has been at new school for about 2 weeks. They move around class rooms and have games every day. So far he has lost 2 ink pens, a rubber, his homework diary (with all his completed homework in it), two and half pairs of socks (took them off for games then couldn't find them to put back on), his swimming trunks (they have turned up again) and yesterday came home without his blazer. Everything (except the socks, that never occured to me) is named.
He is not used to moving around so I understand that this is all new to him, but how can I help him to be a bit more responsible and to check he has everything before he moves from one lesson to the next? Do I just start to charge him for any replacements or do I just have to accept that this is how it will be from now on?