The aim of this study is to evaluate the effectiveness of a universal school-based intervention, which aims to improve the wellbeing of children aged 10 to 13 years, who are attending 5th class or 6th class in primary level education in Ireland.

An estimated 10-20% of children and adolescents worldwide experience mental health difficulties, with 50% of difficulties emerging before the age of 14 years. School is an influential environment for young people, with school-based interventions consistently delivering positive mental health and wellbeing programmes in a cost-effective manner.

A Lust for Life (ALFL) is a universal teacher-led programme which aims to build resilience, increase wellbeing, and enhance emotional literacy of 8-13 year old school children. The programme spans ten 40-minute classes. The ALFL curriculum draws on multiple sources including contemporary positive psychology; traditional, second, and third wave cognitive behaviour therapy (CBT); and developmental, educational, and health psychology.

In ALFL children learn the following specific self-regulation skills: naming and rating the intensity of emotions; linking thoughts, feelings and actions; mindfulness; breathing exercises; visualization exercises; progressive muscle relaxation; positive self-talk (gratitude, optimism, and cognitive restructuring); obtaining social support from adults and peers; assertiveness; managing bullying; and using the internet safely. Skills are learned through didactic instruction, video modelling, in-class experiential exercises, and homework practice. The ongoing development of the ALFL programme follows best practice, with the most recently refined programme evaluated in this study.

This quasi-experimental randomized controlled trial study involves an experimental group and a waiting list control group of children aged between 10 and 13 years. All study participants will complete the Feeling Better Scale, Stirling Children's Wellbeing Scale, and Revised Children's Anxiety and Depression Scale at pre-intervention. Participants will complete the questionnaires online. Following this, schools randomly assigned to the experimental group will receive the ALFL programme, while those randomly assigned to the control group will be placed on a 12 week waiting list and receive curriculum as usual. At post-intervention, the questionnaire measures will be completed online by all study participants. The participants in the experimental group will also complete a brief Satisfaction Scale. The waiting list control group will then receive the A Lust for Life programme.

Inclusion Criteria:

• Children aged 10 to 13 years
• Enrolled in primary school in Ireland
• Obtain written informed consent from parents/guardians
• Provide written assent

Exclusion Criteria:

• Failure to meet inclusion criteria

The de-identified data collected in this research will be archived. Other researchers may contact the investigators to access the de-identified data for use in research into well-being.

The data collected in this study will be made available for other researchers after a manuscript reporting on the study's findings has been accepted for publication.

Data may be accessed for use in research into well-being.