I haven't talked to his teacher this current school year but I have spoken with all his past teachers. We have tried putting magazines, and things of such in the restroom to get him more motivated to go in there. The problem came down to that we have no problems with him going to the restroom now but he just sits there to read the magazines we have in there. As far as medicine goes we must give him the medicines ever so often because it is detrimental to his health when he stops up inside he simply just stops pooping all around and he will get sick and I took him to the doctor at first about it but the doctor just had us put him on diarrheaa meds to clean him out or would prescribe something. It is not issue that we are using the medicine as trying to rectify the problem. We are using medicine trying to get his bowels moving again when they have quit. I took him to the emergency room yesterday because he was throwing up and running fever and it has been a solid month since I can remeber a normal size bowel movement. I was afraid that maybe he was stopped up again and was sick from it.
I do know a lot of kids don't like using the toilets at school. This is especially true if the teacher won't easily let them leave the room and they can only go at break time when there are a lot of other kids around. If his (kinda) normal bowel habits are to go during the day and he doesn't like using the school ones, then ya he is gonna come home with it in his pants. Trouble with giving him medicines during the weekend is that it maynot help him get on a normal schedule.
I would talk to his teacher and make sure she knows that if you son says he has to go to the restroom, that she lets him.
I would really work on getting him on a regular schedule. If you are doing the medicine over the weekend, make sure it is always at the same time and at a time that would get his bowels moving during the morning or at night. In many ways the medicine might be hurting the normal process because when he does have to go, he may not be able to hold it till he gets home.
I am not sure if you can make your bathroom any more friendly for him. He needs privacy. Put a couple of comics in there. Tell him to take his time, etc. You might want to try just a stool softener and keep the normal diet going, with plenty of liquids - and then just let nature take its course. Good luck