“…The samples of these studies were students from secondary schools (Thanomwan & Buncha, 2014); staff, teachers, students and parents of students from the school (Tungkasamit, Silanoi, Nethanomsak, & Pimthong, 2014); and university students (Choochom, 2015;Yiengprugsawan, Seubsman, Khamman, Lim, & Sleigh, 2010). The SEP principles were applied at schools to change their organizational culture, improve management (Thanomwan & Buncha, 2014) and better learning outcomes (Tungkasamit et al, 2014), to improve the living behavior of students (Choochom, 2015) and long-term life satisfaction (Yiengprugsawan et al, 2010). All studies in this group applied Likert type scales (5-10 points) to measure the well-being of the study population and followed cross-sectional design (Choochom, 2015;Thanomwan & Buncha, 2014;Tungkasamit et al, 2014;Yiengprugsawan et al, 2010).…”