C.W.
my 6 yo is right handed and has done the backward thing with her letters since she was in pre-k. Both her pre-k teacher and her kindergarten teacher this year have told us that this is perfectly normal, happens in many children and is because she is absorbing so much new information and sometimes seeing it done on the blackboard it gets backwards in their minds. they both said that by first grade it will resolve. I also think it may depend on how much the teacher is concerned. a friend's daughter did this and her teacher marked each backward letter with a pink pen and within 2 weeks her daughter got sick of the pink marks and started doing the letters correctly.