My nearly 16-year old daughter Indra has this problem too. She lives about 15 km away from her school, and most other students live far away from her. So everytime she gets a group assignment, it is a problem to get together a few times ! . Last year, she did a project all alone, just because she didn't have the possibility to work in group! Up till now, there haven't been any other problems; but if necessary, I would certainly call that teacher and explain the situation( and if necessary I would talk to the school director!). I wouldn't keep her home, because she would miss other important lessons then.... .