Staff and students at The Voice star Jermain Jackman's former college say they are confident he can win the competition.
Mr Jackman graduated from Sir George Monoux College in Chingford Road, Walthamstow, last year and has made it through to Saturday's live final.
The 19-year-old Labour party youth co-ordinator from Hackney is representing Will.I.Am's team, with only four left in the show.
Students and staff have been gearing up for the final by posting banners and leaflets around the college, as well as launching an online campaign with the hashtag #MonouxforJermain.
Ahead of his final performance this weekend, Mr Jackman told the Guardian: "Monoux is my home; it made me who I am and I can't give enough thanks to the teachers for their help.
"I knew this was the only college where I wanted to study. It has an incredible vibe which makes you want to succeed."
Principal Paolo Ramella believes the 'fantastic college ambassador' will win.
He said: "Staff and students at Sir George Monoux College are delighted that Jermain Jackman has made it to the final of The Voice.
"As soon as we heard that Jermain was competing we knew he would do extremely well and we have every confidence that he can win the whole competition.
"Jermain is a fantastic ambassador for the college and his success is a testament to his commitment to achieve.
"Jermain continues to inspire the students through his performances on The Voice, political work and driven, yet humble, nature."
Co-ordinating the Twitter campaign is student and friend of Mr Jackman, Oswald Addo.
He said: "Jermain's success on The Voice has created a huge buzz around the College. We've had so much interest in the #MonouxForJermain campaign - the whole Monoux community is totally behind him.
"I study music and Jermain has been a huge help, not only in the mentoring he provides in vocal workshops but also through his progress on The Voice.
"He's shown us that there are no limits to what we can do, and the campaign to get students to vote is our way of thanking him."
Music teacher Louisa Kennedy also paid tribute to the singer.
She also added: "We are so proud of Jermain.
"The academic success he achieved during his time here has given him a platform to go on to greater things and his ambition sets a fantastic example to current and future learners.
"His performances on the show have been technically outstanding, and I'm so glad that the students here have come together to support him."
Mr Jackman still visits the college regularly to hold vocal workshops for students.
The final is on BBC One at 7pm on Saturday.
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