7th Annual Hamilton Serves Unites College and Community - The 470 members of the Class of 2018 spent part of the day on Aug. 27 volunteering at one of 61 local non-profit agencies.
Nouns that denote a unit take singular verbs and pronouns: "The class graduates in May." "The group made its recommendation." "The committee met to set its agenda." Note that team names take plural verbs: "The Continentals are playing at Sage Rink." Exceptions to this rule are couple, when used to refer to two people, and family, when used to refer to a two or more people. Both of these take plural verbs and pronouns: "The couple were visiting campus to see their daughter on Family Weekend." When referring to a single unit, use a singular verb: "Each couple was asked to contribute $10."
SOURCE: Hamilton College Editorial Style Guide