Sixth formers are walking from Portslade to the Palace Pier and back as part of a fundraising effort today (Tuesday 25 June).
The students from the Portslade Aldridge Community Academy (PACA) are raising money for a trip to Costa Rica where they will be working with poor and disadvantaged children.
Four students, head of art Sharon Durham and Honor Wilson-Fletcher, who chairs the board of governors, set off on Saturday (29 June).
They will carry out conservation work in a national park during their first week on the trip which has been organised by Projects Abroad.
During the second week of their stay they will work in a day care for young poor children. In the morning they will help out with sport and in the afternoons their work will involve painting murals.
Sharon Durham said: “We’ve never done anything like this before – that’s why we’re calling ourselves the PACA pioneers.
“We hope the school will do more of this kind of thing in the future. It’s an amazing opportunity for the students.”
Anyone who wishes to donate to the cost of the trip can contact the school on 01273 416300 or through the website http://www.paca.uk.com/.