I think at the beginning of the school year if a child did that - and I was a teacher - I would give them ONE pass - but I would write on the test - next time the words with incorrect capital letters will be counted as a mistake. That might give the kid and the parent a heads up - that way you could have reminded him. Of course her way works too - I suppose you both will remember she wants lowercase. I'd be more concerned if she were counting off for the writing because she doesn't like the tone - if tone wasn't part of the assignment (write a happy story or something). I also find that my kids will not always remember the instructions for an assignment correctly - or warnings that they will be penalized if they do X. Since he is in 5th grade - the grades somewhat don't matter. It is a good time to learn that with some teachers they aren't going to like what you're putting out so you need to change to meet their expectations or sink with your ship. I"m sure we've all had highs school teachers and college professors (if we went to college) that were insufferable nitpicks on some things and left the barn door open on others. You had to take the class to graduate so you learn to roll with it. Also - a computer would automatically make those words capital letters. I don't know if your child uses a computer to study or type out the list - my kids do. That could be affecting the way he thinks of writing his words in a list like that.