Designing and Evaluating a Classroom-Based Mental Health Programme for Adolescents.

This study is a mixed-methods feasibility trial designed to examine whether a universal classroom-based psychoeducational programme which covers unusual sensory experiences, psychosis, mental health stigma, and coping strategies can be delivered in secondary schools in Northern Ireland. The study aims to determine whether the programme is feasible to deliver, whether students find it acceptable, and whether it is possible to collect questionnaire and reflection data at multiple time points. Students will attend four classroom sessions delivered by the researcher as part of timetabled enrichment lessons. They will complete questionnaires before the programme, after it ends, and one month later. Brief reflections will also be completed after each session. A small number of students may take part in an interview to explore their experiences of the programme. As a feasibility study, this trial does not assess intervention effectiveness but will inform the design of a future full-scale trial.

Inclusion Criteria: * Students aged 16-18 years enrolled in participating secondary schools in Northern Ireland. * Able to provide informed consent in accordance with the approved ethics protocol. Exclusion Criteria: * Students who decline consent or whose parent/carer opts them out, where applicable.