Angelina Jolie arrived in London the other day ahead of her first lecture at the London School of Economics today. What do you think the absentee rate was for students? I’m going to say pretty low.

“Angelina Jolie spoke to a class of students taking the postgraduate course ‘Women, Peace and Security,’ as part of her role as visiting professor in practice in the Centre for Women, Peace and Security,” a spokesperson for LSE tells PEOPLE.  “Miss Jolie spoke about her experience and what has motivated her work as UNHCR special envoy and as co-founder of the Preventing Sexual Violence Initiative, and took questions from the class.”

Angelina’s formal teaching commitments begin in September when she will lead a master class. She told the Evening Standard ahead of today’s lecture that, “I’m a little nervous, feeling butterflies. I hope I do well. This is very important to me.”

Yesterday Angelina and William Hague, for British Foreign Office Chair, spoke at a press conference to mark the fifth anniversary of the Centre for Women, Peace, and Security.

“When this kind of violence and abuse happens in peacetime, we are absolutely clear it is a crime that deserves to be punished by law,” Jolie exclusively told PEOPLE about expanding the initiative to focus on bringing perpetrators of sexual violence to justice. “But when it happens in the middle of a conflict, on a mass scale, with such brutal violence, it is treated as something impossible to prevent or somehow justified by the climate of war.”

As you know, Angelina’s kids are with her on this work trip. And when she wasn’t at work, she was with them at the bookstore. Apparently Knox is really into Harry Potter:

Knox and Vivienne are 8 years old. That’s exactly the age. So it’s the twins’ turn to experience the magic now. Oh man, one more, for a total of 7, and they coulda been the Weasleys.

Also attached- Angelina and Maddox heading to Buckingham Palace today in London.