Delegates articulate their country’s policy on each agenda item and seek to implement it through consensus with representatives of other countries.
In Model United Nations (MUN), one of the most popular extracurricular activities, boys from all six classes attend numerous Model United Nations conferences, competing against students from around the United States and winning a number of awards.

Each participant plays the role of a diplomatic “delegate,” and each school represents one or more member nations in the various UN policy-making bodies. A boy researches the problems on his committee’s agenda; his country’s policy on the issues to be debated; and the procedures, capabilities, and limitations of the UN. Delegates work together to write position papers, submitted several weeks before each conference. At the conference sessions, delegates articulate their country’s policy on each agenda item and seek to implement it through consensus with representatives of other countries.
 
During several days of debate and political negotiation, delegates work together to formulate and pass resolutions on such topics as nuclear disarmament, economic cooperation and development, the preservation of the global environment, international efforts to halt drug trafficking or to facilitate AIDS research, and peacekeeping. Preparation and participation are organized and led by an executive committee composed of students elected by their peers, whose members take great pride in assembling and editing position papers and leading delegations in award-winning performances.
Roxbury Latin sent its first delegation to the National High School Model United Nations in 1979. In 2015-2016, the organization sent more than 100 delegates to four conferences, winning a number of awards.