Pakistani teenager Malala Yousafzai, who survived an assassination attempt by the Taliban, will be reunited with two friends who were injured in the same attack during a visit to Scotland.
Malala, 16, was shot in the head last October after her outspoken views on education and women's rights brought her into conflict with the Taliban.
She is due to address the first public meeting of the Global Citizenship Commission, a body of world leaders representing politics, religious institutions, law and philanthropy, at Edinburgh University on Saturday.
The teenager will meet publicly with school friends Kainat Riaz and Shazia Ramzan during the event at the university's McEwan Hall for the first time since the attack.
It will discuss global developments since the Universal Declaration of Human Rights was passed in 1948.
Mr Brown, UN special envoy for global education and MP for Kirkcaldy and Cowdenbeath, said: "We all know of Malala's incredible courage, strength and determination, and I'm so pleased that she will be reunited with Shazia and Kainat, two young women equally determined that every girl and boy should enjoy the most basic of human rights - a secure, safe place at school."
The three teenagers will later join Mr Brown at the topping out ceremony of a new school in Burntisland, Fife.
"I'm delighted that the people of Fife will meet these three courageous girls at first hand and, as global campaigners for the right of every child to decent schooling, their attendance marks an exciting new chapter for Burntisland Primary School," he said.
Voted one of the world's 100 most influential people, Malala began blogging for the BBC in 2009 about her life in Pakistan's Swat Valley region and her desire to attend school safely and freely.
Her increasing profile in the global media and her campaigns for universal education and women's rights brought her to the attention of the Taliban, members of which attempted to assassinate her in an attack on her school bus.
Since the attack she has addressed the United Nations and was nominated for the Nobel Peace Prize.