QUEST Academy's head boy met Prime Minister David Cameron while on work experience at Number 10.
Azhar Chaudry, 17, emailed Mr Cameron's team last December to ask about the possibility of a week-long placement.
The student, who is a Conservative Party activist, said: "I didn't really expect a response and, after six months of waiting, I'd given up hope.
"But then I received a request to send in my CV and three weeks later, confirmation that my wish had been granted!
"It was followed quickly by a letter from MI5 telling me I wasn't to tell anybody apart from my parents and my principal."
Azhar spent the week of his summer holiday with Downing Street's communications unit, which is responsible for handling Mr Cameron's correspondence.
He was involved in directing messages to the correct departments and had firsthand experience of the Prime Minister's social media team.
On the fourth day of his placement Azhar bumped into the man himself.
"I was coming back from the canteen and I saw David Cameron, who was just returning from a phone call with Barack Obama about the crisis in Iraq," he explained.
"He saw me, stopped, and asked who I was, what I was doing and where I was from.
"We walked together on his way to a press conference and, before he went in, I asked if I could take a photo and he obliged."
Azhar, who hopes to have a career in politics, added: "On my last day the head of the communications unit told me how lucky I had been. Only one other guy had been on work experience, and he was there because his mum knew Samantha Cameron.
"I feel lucky but, at the same time, the experience has reassured me that if you work hard and give things a go, then it's possible to achieve your ambitions."
Azhar was one of the guest speakers at Gavin Barwell's campaign launch at Fairfield Halls last month.