“…Finally, the unproven relationship of sleep quality as a mediator between wellbeing and academic achievement in addition to being caused by technical problems that resulted in path b and path c insignificant (Picture 1), also caused by other factors that play a more dominant role in mediating the relationship between well-being and students' academic achievement. Those factors include the involvement and support of parents in every process of education, a positive relationship between students and teachers and their peers (Kindekens, Reina, Backer, Peeters, Buffel, & Lombaerts, 2014), social intelligence and cognitive factors in the students themselves (Wulanyani & Vembriati, 2018), self-regulated learning ability that hones students to increase independence in completing tasks and solving problems (Kaplan & Maehr, 1999;Noble et al, 2008), a supportive and caring educational community (Cowen, 2000;Engels, Aelterman, van Petegem, & Schepens, 2004;Noble et al, 2008), as well as a psychologically and emotionally safe environment and cultivating prosocial values at an early age (Engels, Aelterman, Van Petegem, & Schepens, 2004;Noble et al, 2008). Therefore, further research can be conducted with more dominant mediators.…”