My DS had a birthday today and his teacher hasn't said anything. I'm not sure if it's a done thing to congratulate kids in class on their birthday, though. It was when I was in school (different country). He said the school didn't know it was his BD today (he was there since nursery) and he said it didn't bother him, but he's quite shy and difficult to read, so I think he was hurt but wouldn't admit it.
WIBU to expect a teacher to say "Happy Birthday"? And would you drop a line to the teacher to remind them?