He walked to the front of the class and asked for Ngamihi, who was overwhelmed by the visit and later ended up with Williams' jacket in her hand. But she wasn't the only one to walk away with one of Williams' possessions.
Another rugby lover, Te Rangimarie Manukau, managed to get Williams' hat which she is going to give to her brother, who is not a big fan of Williams but "loves collecting hats".
Williams also gave away his watch.
Despite a mob of girls congregating around the entrance to the whare and one girl asking how many abs he had, Williams said he wasn't scared to visit Whangarei Girls' High School.
"I was more excited," he said "It's been an awesome second day. We've been visiting schools around the Bay of Islands and working our way back to Auckland and now we're at Whangarei Girls' High School. It's cool to come here and hear some of the girls sporting stories." he said.
Williams made headlines when he handed over his World Cup medal to a young fan after the All Blacks won the World Cup in England last year.