Evaluation of First Year Implementation of Komtü Programme to Improve Children's Emotional Well-being in Pre-school and Primary School.

Context: Lately, mental health has become an important issue of global priority, especially when it comes to child and youth population. Acting during this stage of life is crucial, as the symptomatology of some mental disorders present in adulthood could start before the age of 14 in 33.3% to 50% of cases. It seems that schools could be a great context to foster mental health, as children spend most of the day hours there. At school, children not only acquire academic knowledge, they also learn emotional and social competencies and, in this process, teachers can become a model for them. However, most of the school programmes that aim to enhance children's well-being are directly implemented with children, and few programmes are designed to work with teachers. Furthermore, when implementing a school programme, it is not usual to have a specialist within the school centre, that addresses teacher's worries and accompanies them through the programme completion. That is why Nous Cims Private Foundation decided to create the Komtü programme, which aims to impact children's well-being by accompanying teachers during 3 school years by a specialist that visits the centre twice a week. As this programme is relatively new, the researchers in this study intend to: (1) analyse the benefits of Komtü programme and, considering that this is a long-term programme, (2) the investigators want to study the effectiveness of a more cost-efficient approach by only implementing the training and reflective practice associated with the programme.

Methodology: 8-month 3-armed quasi-experimental pre-post design with control group.

Measures Operationalization: It is expected that Komtü programme could benefit teachers who receive the intervention and their students, since they share a lot of classroom time. Teacher benefits are expected in terms of higher emotional well-being (primary outcome) but also in terms of higher sense of self-efficacy, higher assertiveness and improved mentalizing capacities (secondary outcomes). Children benefits are expected in terms of higher emotional well-being (primary outcome) but also in terms of mentalization, prosocial behaviour and self-esteem (secondary outcomes). We will also consider teachers' burnout and faculty trust as process outcomes since they can impact teacher's well-being.

Statistical Analyses: The analysis will encompass all participants, with the utilization of multiple imputation techniques to address any missing data. Estimation of parameters, accounting for the specific statistical assumption of each model and the data's characteristics, will be carried out using general linear modelling adjusting for baseline values. Various Stata packages will be employed to execute these models, primarily SPSS and jamovi. Concerning statistical power, a sample size of 90 teachers (30 per arm) and 180 students (90 per arm) has been proposed as the minimum required to detect a medium effect size (d=0.50) -in case of teachers- and small effect size (d =0.30) -in case of students- in the design comprising 3 arms, 2 repeated measures (pre-post), and a power level of 0.80.