Sometimes called Faith Ambassadors, Faith Team or Prayer Buddies this is a group of pupils similar to a school council who meet regularly with a member of staff to consider the worship life of the school. This includes Collective worship(assemblies) but also how the messages in collective worship are spread into the school life and environment. Many pupil worship teams plan and lad some collective worship.
Below are some resources which explain how to set up a pupil worship team and some activities you might do as a team
A Guide to Setting up a Pupil Worship Team
Pupil's Spiritual Leadership in School Part of the Faith in the Nexus Toolkit from Canterbury Christchurch Unversity
A model programe for a gathering of pupil worship teams from local schools
An activity to do with a pupil worship team - using pipe cleaners to express ideas about worship
Spiritual Agents: Pupils as Leaders of Collective Worship Grove Book - Grove books are included in the Diocese of Guildford SLA
William and Lucy Lead Collective Worship - A set of 6 activities to do with your worship team