On the 4 year old wiping - back in the old days, lol,you taught them to just reach through their legs as far as they could and swipe and then washed off the hands till they got the hang of it. Then, someone came up with this idea that we needed to wipe front to back so we didn't transfer germs well not easy to teach and some parents just won't let the kid learn to do it themselves. The fact it was ok for them to poop and sit in it and get it all over the whole butt front and back and once toileting it suddenly becomes an issue - have a parent bordering on the paranoid on the germ transfer issue and expects me to always wipe the child. Child is 3 and I would prefer they did it and I "checked" just like we do with tooth brushing in kids but you can thank some medical/scientific team for scaring the parents on another issue. And yes child will go to school and just not bother wiping cause he wasn't allowed to learn.