Preschool teacher only uses half of son's hyphenated last name. Husband and I disagree on whether or not to mention it.

My 4 year old goes to a Hebrew preschool. I'm Jewish and my husband isn't. I think this is relevant.I didn't change my last name when I got married. My husband and I kept our last names and decided to hyphenate or kids last names. I have a super Jewish sounding last name (i.e Goldberg) and my husband has a very common last name (i.e Smith) so our kids are Goldberg-Smith (neither is our real last name). It hasn't been much of a problem. We get Goldberg-Smith printed on their sports jerseys and write Goldberg-Smith on everything from official documents to homework assignments.We noticed that all of our son's school work was coming back only with "Goldberg." This was on things she wrote and on things our son wrote. Our son told us that his teacher said to only use Goldberg for school. I asked him why and he said that she told him because they use their Hebrew names at school. This isn't something that has ever been said before. My husband is annoyed and wants to ask the teacher to clarify. I'm more content to let things slide. I teach as well and am careful about running up to the teacher demanding answers. My son was diangosed with a medical condition this year and she has been awesome about handling that even though she never heard of it before. She has been great and I feel like this is the nature of having a hyphenated name. One eventually takes priority.Am I being insensitive? via /r/Parenting http://bit.ly/2FSaDSW