… of September 13. Welcome to Community IMPACT Day, the MGH Institute’s annual event in which students spend a morning volunteering with more than 50 Boston-area nonprofits. More importantly for their education, it is when the more than 600 first-year students received their … or staff member, increasing the total number of participants to more than 650. The event, now in its eighth year, is the culmination of a yearlong planning process in …