An evening of music at Three Ways School will raise money for a new onsite café and shop allowing pupils to gain valuable work experience.
The school in Odd Down caters for children with a wide range of special educational needs and first launched a fundraising appeal for the café in 2013.
It needs £300,000 to build the café in front of the school, which would be run by pupils and would sell produce grown on the school grounds.
The concert, on Friday October 17, will star the school's own choir, as well as the Norland College Choir and will be hosted by Grenville Jones, conductor of The City of Bath Male Voice Choir.
Project manager Lucy Beattie said there had been a lot of work behind the scenes applying for grants since the launch of the school's appeal, named the Teacup Appeal.
The school has collected just under £150,000 through grants, charity events and donations, but is looking to make its next big fundraising push with the concert.
Mrs Beattie said: "Once we have got halfway there's a lot of match funding we can go for. We are also reapplying for planning permission because we have redesigned the building to utilise the space better.
"The plans were all put in place quite a long time ago and there and some expensive aspects of the original plan."
The café, designed by Western Building Consultants, will be a single-storey timber frame building, designed in a horseshoe shape.
It will be a flexible space and could be used by other community groups for meeting rooms or art classes.
Mrs Beattie said: "It's all about people gaining work experience and learning about customer service and food hygiene by working in a real-life workplace.
"It's very difficult for employers to take on people with additional needs because you're then taking up resources within your business and most businesses are stretched for resources anyway.
"For example, we can never get our young people work experience as mechanics because the risk assessment would be so difficult for them to carry out.
"To be able to off them experience onsite with familiar people, where they don't have to travel far, and where we can adapt the experience to meet their needs is invaluable."
Liz Hunt, principal of the Norland College, said: "During their training Norland students spend time at Three Ways School gaining valuable experience with children with special educational Needs. The school is fantastic and Norland is delighted to be supporting the Teacup Appeal, the opportunities it will bring to young people with special needs will be a real asset to the community of Bath."
The concert is at 7pm. For more information and tickets call (01225) 838070 or e-mail lucy.beattie@threeways.co.uk.