Today was a big day for Malala.

In 2012, Malala Yousafzai’s story stunned the world, when the 15-year-old student was shot in the skull by Taliban gunmen who had occupied her hometown of Swat, Pakistan. Her crime? Going to school.

Five years later, Malala has finished school — and joined Twitter. She tweeted her “bittersweet” feelings about graduating on her new account.

Take Action: Tell Leaders How Important Education in Emergencies Is

In the years since her attack and miraculous recovery, alongside completing her own schooling, Malala has been busy as a global advocate for girls’ education.

Fighting for girls’ rights to learn has long been a passion of Malala’s. At age 11, she started a blog called “Diary of a Pakistani Schoolgirl,” in which she wrote about her fight to stay in school after the Taliban occupied her hometown and banned education for girls.

Through her blog, published on BBC Urdu, she became a well-known figure in Pakistan, and word of her identity eventually found its way to the terrorist group that shot her.

Her story caught the attention of media outlets worldwide, and at only 19, Malala has made an invaluable impact in the fight for girls’ education.

Read More: Malala Is Writing a Children’s Book About a Magic Pencil & Fixing the World

She started a multi-million dollar advocacy fund called the Malala Fund, which fights for every girl’s right to complete 12 years of “free, safe, quality education.”

Just a year after her attack, she was named one of TIME magazine’s most influential people. In 2014, she published her autobiography “I am Malala,” which was adapted for younger readers, too.

The Pakistani government even renamed their National Peace Award for youth the National Malala Peace Prize.

In 2014, she became the youngest-ever winner of the Nobel Peace prize, and this year, she became the youngest person to serve as a United Nations Messenger of Peace — the UN’s highest honor.

Read More: The 10 Times Malala’s Words of Wisdom Have Left Us Speechless

After achieving all of this as a teenager,  Malala is onto what will surely be another impressive and inspiring chapter in her life. After graduation, she plans to go to college, and reportedly has already received a conditional offer to attend Lady Margaret Hall, Oxford, the alma mater of the late Pakistani Prime Minister Benazir Bhutto.

While this is a new phase for Malala, her roots remain grounded in the passion that fueled her blog a child.

Today, she called for action, tweeting “On and off Twitter, I’m fighting for girls — will you join me?”

The answer, for Global Citizens around the world, is clear.