The 10 young people from the North Road school teamed up with 10 of their peers from St Dominic’s Grammar School, Belfast, in the Habitat for Humanity Schools Programme.
They participated in workshops and renovations for a day at Windsor Presbyterian Church, Belfast.
A statement from Carrickfergus Grammar School explained: “This project is a vital part of the community providing an opportunity for Habitat for Humanity Northern Ireland to fulfil its local mission of bringing people of diverse backgrounds together on a project that aims to serve everyone in the community.
“Workshops involved invaluable discussions between pupils challenging them to consider factors influencing their society and identifying their role in bringing about positive change as local and global citizens.
“Students came away from the project feeling enthusiastic and motivated to raise funds for the charity.”