Some friends can offer more support than others, especially if they have lost someone themselves. Each kind of friend is important. You may need to share with friends some of what you are going through so they can understand how you are acting. If you have intense feelings, it could be helpful to find support through counseling or support group as a way to express yourself more freely. You may find that professors are unsure about how to interact with you when you share with them you have had a death of someone close to you.
Death brings up feelings that are uncomfortable for many people.
Keep your professors informed of how you may need to adjust your studies. Some students need the structure of classes to help them following a death. Others may need to drop their units to a minimum load to decrease the academic pressure. Still others may decide to take a semester out of school due to the disruption in their lives and the inability to concentrate on school work. We all grieve differently.