Self-regulation is an essential skill that enables people to manage and control their emotions, behaviors, and thoughts. Its development has a significant impact on the lives of humans. Educators have studied it for decades after realizing its significance. However, under the circumstances of COVID-19, students were forced into the online learning environment. Therefore, this is a valuable opportunity to research the development of self-regulation in online learning. In the meantime, as an adaptation to online learning processes, self-regulation would be impacted by shifting instructional tactics and teacher directives. At an early age, the majority of pupils maintained their previous learning practices, and self-regulation development was not evident. In the middle stage, students' levels of growth varied based on their prior academic accomplishments, major, and age ranges. Students' self-development improved in general as a result of their realization that enhancing self-regulated learning would improve their academic achievement. Meanwhile, teachers were encouraged to develop more selfregulation skills and activities for pupils. Nevertheless, due to the paucity of previous studies, it is suggested to do additional studies in other educational sectors.