Malala Yousafzai has returned to school for the first time since she was shot in the head by the Taliban in October for campaigning for the education of girls.
The 15-year-old said on Tuesday that she had "achieved her dream" and was looking forward to meeting new friends at the independent Edgbaston High School for Girls in Birmingham, central England, where she is now living.
Malala was flown to Britain for surgery following the attack and underwent several operations as recently as last month.
"This is a great day for Malala, for her family - and for the cause of education worldwide."
- Gordon Brown, Former UK PM
"I am excited that today I have achieved my dream of going back to school," she said in a statement. "I want all girls in the world to have this basic opportunity."
"I miss my classmates from Pakistan very much but I am looking forward to meeting my teachers and making new friends here in Birmingham."
Pictures showed her going to school carrying a pink backpack and wearing a black headscarf over a green sweater.
She will be studying a full curriculum in preparation for selecting subjects for GCSEs, the exams that schoolchildren in England, Wales and Northern Ireland sit when they are aged between 14 and 16.
Malala was shot at point-blank range by a Taliban gunmen as her school bus travelled through northwest Pakistan's Swat Valley on October 9, in an attack that drew worldwide condemnation.
She has since become a global symbol of the campaign for girls' right to an education and has been nominated for the Nobel Peace Prize.
UN education envoy and former British prime minister Gordon Brown, who has backed Malala's cause, said: "This is a great day for Malala, for her family - and for the cause of education worldwide.
"By her courage, Malala shows that nothing - not even bullets, intimidation or death threats - can stand in the way of the right of every girl to an education.
"I wish Malala and her family well as her courageous recovery continues."
Malala was discharged from hospital in early February after surgery to fit a custom-made piece of titanium to her skull, and an electronic implant to help restore hearing to her left ear.
Her father Ziauddin Yousafzai is serving as Brown's special adviser on education and her family have temporarily moved to Birmingham, a city with a large Pakistani population.