Nearly 400 delegates from 23 schools around the world will descend on Haileybury this weekend for the annual Haileybury MUN gathering this weekend.
There are 69 delegations taking part, as well as 30 Student Officers, some 130 pupil helpers, and 70 staff.
Schools attending are from England, the USA, the Netherlands and France.
A full report will appear on the website next week. The MUN is a simulation of the real United Nations, with pupil delegates representing real countries in committees discussing real issues and agreeing on real resolutions.