[Sister Havana]

Definitely tell. It's not just his grade he's affecting, it's all of yours. I did a group project in my marketing class my senior year. I was in a group of six, but five of us did all the work. One of the things our professor asked us to do after our presentation was to write down how we thought the group worked together, if everyone contributed equally, etc. and she took that into account as part of our grade. The five of us who did do the work were VERY clear that the other girl had done squat, and she got a lower grade than the rest of us.