Join the organizations that relate to your major and try to reach at least level 2 in the organization. This will give you extra credit whenever you take part in the organization's activities.
Brainiacs: Foxbury Institute, benefits all majors
Bot Savants: Foxbury Institute, benefits Computer Science, Physics, and Villainy majors
Art Society: University of BriteChester, benefits Art History and Fine Art majors
Debate Guild: University of BriteChester, benefits Communications, History, Language, Psychology, and Economics majors
You can only join an organization if you are attending its University. The Brainiacs from Foxbury are especially helpful, since their main meeting place is a Study Spot and their main activities are homework, term papers, presentations, and study.