"So many of our young people went and they were just inspired and they fell in love with him. They just came back full of the inspiration that he was to them."
As for who his successor might be after he steps down at the end of the month: "Nobody will have a clue. I think it will be a surprise whoever it is," Mr Eggleton said.
"We just rely on God the Holy Spirit to be with the cardinals and we just rely on them to give us the right person for us and the world."
The church had the utmost respect and appreciation for Pope Benedict XVI but fresh blood would have its advantages, Mr Eggleton said.
"We're full of hope and it is important for us to have somebody at the top that is full of energy and challenge for us."
Aquinas College principal Ray Scott said it was an unusual step for the Pope to take but it was understandable in light of his ill health.
"I didn't know what to expect apart from that he was quite a conservative theologian. I think he's actually been a good presence. He's come across as a gentle and humble sort of person and obviously worked hard at the role."
Former Aquinas College student Victoria King, 21, who attended the World Youth Day in Sydney in 2008, said seeing Pope Benedict XVI in person for the first time was an awe-inspiring, "huge experience" she will never forget.
Ms King, who is studying towards a bachelor of science at Canterbury University, said she was surprised by the Pope's momentous decision.
"I feel a bit sad as he is a really good leader who relates well to all people no matter whether they're teenagers, young people or older people. I think he has done an amazing job and whoever is appointed the next Pope will have quite big boots to fill," she said.
Ms King said during Pope Benedict XVI's reign he has had to deal with some very challenging issues and being the spiritual leader of the Roman Catholic Church is a very demanding commitment.
"Pope Benedict deserves a well-earned break," she said.