omg that is horrible they don't help him! poor little munchkin. Kids aren't manuals, they don't necessarily stick to what adults expect they should! i definitely would be talking the the director that he needs a bit more help. I don't have lots of childcare experience but it's just plain wrong to let him walk aroudn with poo on his hands or a poo in his pants! there are some things that are not acceptable in my book, they are offering care to your little man so that means more than just supervising them.
he's at the young end of that new room, so i would imagine that he is not the only little one still learning the ways of the loo! It's a bit rough to expect him to magically 'get it' just because he got moved to a new room!
Sorry if that's a little cranky pants... one of dem mornings! lol. Good luck! My 2 yr old has just started tt! what a revelation it has been!