Her school headmaster is thrilled by the news and Isobel herself couldn't be happier.
Eighteen-year-old Isobel Knight of Wentworth Falls was recently appointed the 2015 World Vision youth ambassador for NSW, beating hundreds of applicants for the coveted role.
During the year she will learn about World Vision's humanitarian emergency work and travel to Bangladesh to see the work first hand, while also helping build World Vision's profile amongst other young people via social media.
"It's an opportunity to do what I can," she said.
"We'll learn about all their work on the ground in areas where people are living in poverty, and aim to encourage Australian youth to participate in fighting poverty.
"There are a lot of things in our world that just flat out aren't fair, aren't right, and to me, I think it's important when you see an opportunity where you might be able to help to take it."
Blue Mountains Grammar School headmaster Trevor Barman said he was "incredibly proud of Isobel's community spirit" adding her commitment to community service had "been consistent throughout her years at Grammar".
Isobel is no stranger to helping others.
In 2012 she spent 10-days on a school trip to Indonesia and returned determined to boost funds for the school's Child Survival Program partnership with Compassion Australia.
The talented then 16-year-old singer/guitarist wrote and recorded a song to raise money[http://childsurvivalproject.bandcamp.com/releases].
Mixed and recorded by C.S. Field at Underwood Studio in Wentworth Falls, proceeds from every $1.50 download go to "keeping the project running for another year," she said simply.
"It was humbling and uncomfortable for me to go and see poverty outside of statistics and the theoretical and see how it affected real people's lives," she said. "At the end of the trip I went home to my comfortable house and education, my world of opportunities, and sort of made a promise to myself that I wasn't going to just slip back into feeling comfortable in the privileged end of inequality that I had experienced."
During the visit, she and her friends brought over bubbles, stickers and nail polish to share with the kids, and found it was "amazingly popular".
"People of all genders and age groups were keen to get their nails done, and some kids would even get them painted then immediately scratch it off and come back."
Like 70,000 other students, Isobel recently finished her HSC examinations and will begin the youth ambassador role in early December, attending a conference in Melbourne before travelling overseas next year.
Earlier this year Ms Knight was the recipient of Blue Mountains Grammar School's highest award for service, the T. W. Cuff Award for Altruism.
To donate to Blue Mountains Grammar School's Child Survival Project with Compassion Australia go to: https://compassion-community.everydayhero.com/au/childsurvivalproject.