My 8 year old DD has been running her own bath from about the age of 6 (after I showed her how to check the temp). She usually has showers now, turns it on, and gets herself in and out by herself and has done so for over a year. I made sure she knew how to check the temp in the shower before hopping in too. I can always tell she's fine too - by the really loud singing! Cute! And I can get on with preparing dinner.