ahh fair enough, i heard that happens quite a bit. I haven't gotten my statement of marks yet, but from what my teacher told me she entered 48/50 for me for GA2. However on the results, it said I only got an A for GA2, which was weird. Either my teacher forgot or it just scaled down badly.
She may have destroyed your SACs if she feels you haven't been putting efforts in during class OR it could've just scaled down :3, but I don't think that's the case, seeing as you still got 39, for it to scale down that much, you'd be looking at a ~35
I go to XJS LOL what should I do :/
Get on really good terms with your teacher. This is 3/4 Chinese, forget about what your peers think about you (teacher's pet or w/e), it's not worth a bad ranking. And, of course, make sure you do what your teacher asks you to do and do it to the best of your capabilities.