Should boys and girls take baths together?

When a kid is young and cannot bathe or shower by themselves, i believe so. But once they get to the stage of being able to take car of their own personal hygine i believe it is time for the parent to let them do it themselves.

No later than 4-years-old.

A parent should bathe the children until they are able to do it for themselves. It may not be a good idea for an adult to bathe with a child on several levels. One problem is that bathing areas are inherently dangerous due to slippery surfaces. The bathroom is one of the most common sites of home injuries. A parent who slips in the bathing area may fall on the child and cause serious injuries. Also, soaping a child up while the adult is also bathing can create more opportunity to slip and fall.