The annual Global Education & Skills Forum is under way in Dubai.
Over the course of two days, delegates, celebrities and world leaders will discuss, debate, and seek solutions to achieving education, equity and employment for all.
The two-day forum ends with the awarding of the Global Teacher Prize.
Today, British comedian and impressionist Rory Bremner will be interviewing prominent guests from the worlds of politics, sport and entertainment.
Watch the video below in which he interviews former UK prime minister Tony Blair, activist Mohamed Sidibay, West Indies cricketing legend Brian Lara, Suits actors Sarah Rafferty and Gina Torres and former English professional footballer Jermaine Jenas:
Earlier, he interviewed Sir Mo Farah and Vikas Pota and Priyanka Chopra:
On Saturday, Kevin Trejos and two other survivors of the Marjory Stoneman Douglas High School were the surprise guests at the opening plenary moderated by Vijita Patel, trustee of the Varkey Foundation, which hosts the annual conference.
Later, a host of celebrities were invited on stage to relive their school days, including four time and reigning Formula One world champion Lewis Hamilton, British actors Nicholas Hoult - best known recently for his roles in Mad Max: Fury Road and as Beast in the X-Men franchise - and Taron Egerton, of comedy action film series Kingsman fame.
Among the other famous names attending are Oscar winning actor and social activists Charlize Theron, Olympic long distance champion Sir Mo Farrah, Priyanka Chopra, the former Miss World and star of Bollywood and Hollywood, and the Merrell twins, whose YouTube channel has four million followers and who have just completed their first feature for Netflix.
From the world of politics, speakers include US vice president and environmental campaigner Al Gore, former British prime minister and Middle East peace envoy Tony Blair, and Julia Gillard, the former prime minister of Australia.